Referee Calum Murray red-carded Celtic defender Cha Du-Ri (29th minute) and midfielder Victor Wanyama (57th minute), while also sending manager Neil Lennon into the stands at halftime.
This allowed Rangers their three-goal advantage and they were coasting until United States defender Carlos Bocanegra was sent off in the 88th minute for a foul on Georgios Samaras in what appeared to be a makeup call.
Rangers went ahead on goals by striker Sone Aluko (11th minute), forward Andrew Little (71st) and defender Lee Wallace (77th). After Bocanegra departed, midfielder Scott Brown converted a penalty kick in the 89th minute and defender Thomas Rodne narrowed the deficit to one two minutes into stoppage time.
U.S. midfielder Maurice Edu went the distance for Rangers, while midfielder Alejandro Bedoya dressed, but did not play.
In a season-opener in Norway's Eliteserien, winger Josh Gatt returned from the U.S. under-23 Olympic qualifying training camp to Molde FK and scored the winning goal Friday in a 2-1 over visiting Strømsgodset IF in the 70th minute.
In Mexico, two Americans scored important goals.
Midfielder DaMarcus Beasley netted the equalizer for Puebla in the club's 1-1 draw Saturday with Cruz Azul.He used his first touch for a short chip over the goalkeeper's head midway through the second half of the tight match. It was Beasley's fourth goal of the season.
Striker Herculez Gomez continued his run of fine performances , scoring with a well-placed header off a corner kick in Santos Laguna's 2-0 win over Queretaro. It was his sixth goal in as many matches, giving him eight goals this season.
In the English Premier League, American goalkeeper Brad Friedel made two saves for a clean sheet for Tottenham Hotspur in a 0-0 draw with host Chelsea.
Friedel, now the oldest player in the Premier League, made a great save in denying Chelsea attacker Frank Lampard in the dying moments.
Chelsea's Stamford Bridge in probably Friedel's least favorite place to play, conceding 80 goals there over his long career with various teams in the Premiership, including a memorable seven one night while he was in net for Aston Villa.
On Wednesday, Spurs fell out of third place with a 1-1 draw with visiting Stoke City, gaining a point in the standings only when Rafael van der Vaart netted a header in stoppage time.
Friedel made only a single save.
Spurs are fourth at 16-7-7 with 55 points, trailing Arsenal (18-8-4) by three points. Chelsea is five points behind Tottenham at 14-8-8. The top three finishers earn berths in the European Champions League. The fourth team goes into a Champions League play-in round.
U.S. midfielder Clint Dempsey went the distance, despite taking a late nick to an ankle, but visiting Fulham's strong effort went to waste in a 1-0 setback to league-leading Manchester United at Old Trafford.
Fulham controlled much of the action in the first half, but Wayne Rooney scored from-point-blank range four minutes before intermission after Ashley Young's left-side cross was poorly cleared by Fulham.
Dempsey, establishing himself as one of the Premier League's best attackers, is being looked at by the larger clubs in England and elsewhere in Europe. He has been offered a new three-year pact by Fulham and negotiations are now underway.
U.S. keeper Tim Howard had an easy day Saturday, making only one save to post a shutout in Everton's 2-0 victory over Swansea City.
American keeper Marcus Hahnemann did not dress for Everton.
On Wednesday, Howard was sharp, making three saves, but Everton fell 1-0 to Arsenal on an early Thomas Vermaelen header.
American defender Tim Ream went 90 minutes for Bolton Wanderers in a 2-1 win over Blackburn Rovers.
Tennessee-born defender Adam Henley did not dress for Blackburn. Bolton's American midfielder Stuart Holden remains in rehab after knee surgery.
American defender Zak Whitbread went the distance and received a yellow card for Norwich City in a 2-1 triumph over Wolverhampton.
U.S. defender Eric Lichaj played the final 12 minutes and received a yellow card for Aston Villa in a 3-0 loss to Arsenal.
American Brad Guzan was Villa's backup keeper.
In the English League Championship, Darby County's Irish-American forward Conor Doyle's injury is worse than originally feared. He tore a hamstring in a reserve match and will be out for at least a month, likely ending his season on a sour note.
He had been slated to see more first-team minutes by manager Nigel Clough.
American midfielder Robbie Rogers after regaining full fitness following missing matches with a concussion, dressed, but did not play for Leeds United's 1-0 decision over Millwall on Saturday.
Rogers was not available Tuesday when Leeds fell 7-3 to Nottingham Forest.
Birmingham City manager Chris Hughton hopes to have U.S. defender Jonathan Spector back in the lineup action when City hosts Crystal Palace on April 7.
"The manager said he's likely to be about a couple more weeks," Brums press officer Chris Kershaw told MLSsoccer.com. "It's just niggled -- it's not torn or anything. But it'll be about 10-to-14 days before he's back in action."
Since Spector's injury, Birmingham is 1-1-1. With eight matches remaining, City (16-10-12, 60 points) is battling to earn entrance into the promotion playoffs., tied for sixth place with and owning a game in hand on Blackpool (16-11-12) and Cardiff City (15-9-15).
The third-through-sixth-place teams play off for a third promotion position. Brighton and Hove Albion is fourth at 17-11-11 with 62 points, followed by Middlesbrough at 16-9-13 with 61 points.
City drew 1-1 with Cardiff Saturday, preceded by a 4-1 road loss to last-place Portsmouth.
U.S. striker Robbie Findley did not dress for Nottingham Forest, which drew 1-1 with Brighton on Saturday.
American defender Daniel Potts dressed for two matches in the last week, but did not play for West Ham United in its 2-2 draw with Burnley on Saturday or a 1-1 Tuesday draw with Middlesbrough.
In the third-tier League One, American defender Frank Simek went the distance in a pair of matches, first Carlisle United's scoreless draw with Preston North End on Tuesday and then a 1-1 tie with Colchester United on Saturday.
American forward Mike Grella did not dress for Bury in a 1-1 draw with Preston North End.
American midfielder Anton Peterlin did not dress Saturday for Walsall in a 1-1 draw with Stevenage.
In the German Bundesliga, German-American defender Timmy Chandler played 90 minutes Sunday for 1. FC Nürnberg in a 1-0 loss to VfB Stuttgart.
German-American defenders-midfielders Fabian Johnson and Danny Williams started for TSG 1899 Hoffenheim in its 2-1 victory Saturday over Borussia Mönchengladbach. Johnson went the distance, while Williams was subbed out in the 58th minute.
American forward Joe Gyau was absent for Hoffenheim, away with the U.S. under-23 men in the CONCACAF Olympic Qualifying Tournament.
German-American midfielder Jermaine Jones went the distance and received his usual yellow card for Schalke 04 in its 2-0 win Saturday over Bayer Leverkusen.
American David Yelldell was Leverkusen's backup keeper.
U.S. defender Steve Cherundolo went the distance and received a yellow card for Hannover 96 in its 2-1 loss Saturday to Bayern Munich.
American forward Andrew Wooten dressed, but did not play for 1. FC Kaiserslautern in its 2-0 loss to SC Freiburg.
German-American striker Terrence Boyd, a member of Borussia Dortmund's reserve team, is with the U.S. under-23 men in Olympic qualifying.
German-American defender-midfielder Alfredo Morales did not dress for Hertha Berlin in a 3-1 triumph over 1. FSV Mainz 05.
In the second division 2. Bundesliga, forward Matt Taylor was the only American to play this weekend, joining the fray in the 70th minute for SC Paderborn 07 in its 2-1 loss to MSV Duisburg on Sunday.
American striker Bobby Wood dressed, but did not play for 1860 Munich in its 1-0 win Friday over Dynamo Dresden.
American keeper Luis Robles did not dress for Karlsruher SC in a 3-0 loss to SpVgg Greuther.
In Italy, U.S. midfielder Michael Bradley went 90 minutes for Chievo Verona in its 1-1 draw with Siena on Sunday.
In the Netherlands, U.S. striker Jozy Altidore is developing a role, though still somewhat undefined, at AZ Alkmaar.
On Thursday night, AZ's quest for the KNVB Neker (Dutch Cup) ended with a 4-2 semifinal loss at home to Heracles in extra time.
Altidore started, but was pulled at halftime in favor Charlison Benschop, back from injury.
On Sunday, Altidore replaced Benschop at halftime in a 1-0 Eredivisie victory over RKC Waalwijk.
In France, American striker Charlie Davies once again did not dress for Sochaux, a 2-1 loser to Lyon on Saturday.
In Belgium, U.S. midfielders Sacha Kljestan and Mix Diskerud (who is away with the U.S. under-23s) sat out Cup matches.
In Denmark, American defender Michael Parkhurst scored his first goal in almost four years and received a yellow card Sunday for FC Nordsjælland, which defeated Horsens 2-0.
American defender Conor O'Brien went the distance and received a yellow card for SønderjyskE in a 2-1 triumph over Aalborg BK.
American striker Chris Rolfe dressed, but did not play for Aalborg.
American defender Clarence Goodson went 90 minutes Sunday for Brøndby IF in its 2-1 decision over Lyngby.
American defender Brad Rusin played the final five minutes for HB Køge in its 4-2 victory over Odense BK.
In Norway, American midfielder Ricardo Clark and defender Sean Cunningham went the distance for Stabæk IF in a 0-0 draw with Aalesund.
American goalkeeper Steve Clark recorded a shutout for Honefoss BK in a 0-0 draw with Lillestrom.
American defender-midfielder Michael Orozco Fiscal played 90 minutes for San Luis in a 3-2 loss to Atlante.
American midfielder Sonny Guadarrama did not dress for Atlante.
American defender Edgar Castillo went the distance and received a yellow card for Club Tijuana in a 2-0 whitewash of Atlas. American midfielder Joe Corona missed the game for Tijuana, away with the U.S. under-23 men, while American defender Greg Garza did not dress.
Robert Wagman is SoccerTimes senior correspondent.
Do you have a comment on this story or something to say about soccer in general? Send us a letter.
©Copyright 2012 SoccerTimes.com. All Rights Reserved.