Just two weeks ago, 64 teams began playing for the opportunity to reach the Final Four in San Antonio. Here's a quick look at the four teams who survived to play in Saturday's national semifinal matchups:

OKLAHOMA STATE (31-3)ROAD TO THE FINAL FOUR:beat Eastern Washington 75-56; beat Memphis 70-53; beat Pittsburgh 63-51; beat Saint Joseph's 64-62.STARS:The backcourt of Tony Allen and John Lucas led a balanced attack all season and they're doing the same in the NCAA tournament, averaging 15.8 and 13.5 points, respectively. Lucas hit the game-winning 3-pointer in the regional final against Saint Joseph's with 6.9 seconds to play. The 6-foot-4 Allen is second in rebounding during the tournament at 6.5 per game.INJURIES:The Cowboys are the only team in the Final Four to have avoided the injury bug and haven't really been affected by it all season.COACH:Eddie Sutton is at his third Final Four (Arkansas 1978, Oklahoma State 1995) and the 68-year-old would make history by winning it all, as the oldest coach of a national champion. Sutton has taken a team with five Division I transfers and only two seniors and won the Big 12 regular season and tournament titles with his usual stress on defense, although this team likes to run.KEY POINT:The three-guard backcourt is one of the best in the country and the front court is underrated. Forwards Ivan McFarlin and Joey Graham are both shooting 68 percent from the field in the tournament and the Cowboys have outrebounded opponents 35.8-26.5 in the four games. Oklahoma State had the toughest second weekend of the tournament having to face a big, physical team like Pittsburgh before going against a perimeter-oriented Saint Joseph's.GEORGIA TECH (27-9)ROAD TO THE FINAL FOUR:beat Northern Iowa 65-60; beat Boston College 57-54; beat Nevada 72-67; beat Kansas 79-71, OT.STARS:The three guards lead an extremely balanced offense - six players average between nine and 15 points. Jarrett Jack is the latest in a long line of quality Georgia Tech point guards, joining the likes of Kenny Anderson, Mark Price and Stephon Marbury. Isma'il Muhammad frequently makes his way into the nightly highlights with his acrobatic dunks.INJURIES:B.J. Elder, the Yellow Jackets' leading scorer at 15.3 points per game, went down 2 minutes into the regional semifinal win over Nevada with a sprained ankle. He tried to come back in that game but played just 1 more minute. He started against Kansas in the regional final but was clearly still hurting and played 12 minutes without scoring. The 6-4 junior practiced Thursday and indicated he should be close to 100 percent.COACH:Paul Hewitt is making his first Final Four appearance. The 40-year-old is in his fourth season at Georgia Tech and he has already earned a reputation as a defensive coach, often changing defenses to take advantage of the Yellow Jackets' depth.KEY POINT:If Elder is healthy, the Yellow Jackets will go their usual eight deep and try to force the issue with their defense the way they did against Kansas in holding down forward Wayne Simien. Like Oklahoma State, Georgia Tech's backcourt gets the attention but the front line has improved all season. Seven-footer Luke Schenscher has become a presence in the middle on both ends and Clarence Moore has come off the bench in the tournament and averaged 8.3 points and 6.0 rebounds. The Jackets haven't blown out an opponent in the tournament, which means they have found a way to win four close games.THE SKINNY:With so much attention paid to the two back courts this game should come down to who gets more production up front. The teams are very close statistically and there's no experience advantage because none of these players have ever been this far in the tournament. The Yellow Jackets proved they can win without Elder, which has to be big for their confidence. Another boost is that they've defeated both teams in the other semifinal. Look for yet another close win: Georgia Tech 73-70.

DUKE (31-5)ROAD TO THE FINAL FOUR:beat Alabama State 96-61; beat Seton Hall 90-62; beat Illinois 72-62; beat Xavier 66-63.STARS:J.J. Redick has become one of college basketball's most familiar players with his shooting at the lines - almost 40 percent on 3s and 95 percent on free throws. Luol Deng lived up to his billing as a star freshman averaging 15.1 points - second to Redick - and 6.8 rebounds - second to Shelden Williams. Williams averaged 12.9 points, 8.6 rebounds and "The Landlord" had almost half of the Blue Devils' 237 blocked shots.INJURIES:Chris Duhon hurt his ribs when he crashed into a television camera during the Atlantic Coast Conference championship game. He shook off the painful injury and gave inspirational performances that gave him a spot in Duke's NCAA tournament lore. He averaged 4.8 points, 5.5 rebounds, 5.2 assists and several hustle plays in 31 minutes. The five days off should help him regain his shooting touch.COACH:Mike Krzyzewski has his mail sent to the Final Four. This is his 10th Final Four since 1986 and the Blue Devils have won three national championships (1991, 1992, 2001). The only coaches with more Final Four appearances are John Wooden (12) and Dean Smith (11). This Duke team doesn't have the player of the year-caliber star most of his others did but it plays defense like those teams and has an extremely balanced offense.KEY POINT:Duhon is the only player with Final Four experience; he averaged 8.2 points in the 2001 championship run as a freshman. Duke is all about defense and the Blue Devils do it inside with shot blocking and on the perimeter with ball pressure that holds opponents to 31.9 percent from 3-point range and forces 17.2 turnovers per game. The Blue Devils have held 12 opponents to 60 points or less, tying for the second-most in Krzyzewski's 24 seasons.CONNECTICUT (31-6)ROAD TO THE FINAL FOUR:beat Vermont 70-53; beat DePaul 72-55; beat Vanderbilt 73-53; beat Alabama 87-71.STARS:Emeka Okafor was a unanimous All-America selection averaging 17.4 points, 11.6 rebounds (No. 2 in the country) and 4.2 blocked shots (No. 1 in the country). He leads the country with 23 double-doubles and he shot 59.5 percent from the field. Ben Gordon was pretty impressive in a costarring role, leading the team at 18.5 points per game and shooting 43.7 percent from 3-point range.INJURIES:Okafor missed the first two games of the Big East tournament with back spasms, then missed most of the second half of the win over Alabama in the regional final with a "stinger" in his right arm after being hit in the neck. He was hit in the same arm during practice Wednesday but he is expected to be 100 percent for Saturday.COACH:Jim Calhoun is in his second Final Four. The Huskies beat Duke in the 1999 national championship game. He has five 30-win seasons, second only to Krzyzewski's eight. Easily the most volatile of the coaches on the sideline, Calhoun has a 30-9 record in the NCAA tournament.KEY POINT:The Huskies have held their opponents to 35.6 percent shooting in the tournament. They had the easiest ride to the Final Four, never facing a team seeded higher than sixth, but they won the games by an average of 17.5 points and it seemed none of them were even that close. One additional weapon that has arrived in the tournament is the 3-point shooting of Rashad Anderson. He is 16-for-31 from beyond the arc and he started both the Vermont and Alabama games by hitting his first six 3s.THE SKINNY:These teams are very similar. Both can score in bunches and can also excel in the halfcourt. Both are excellent defensive teams inside and on the perimeter. They both have veteran coaches, although Krzyzewski has more experience at this stage of the tournament. Many consider this the real championship game but both teams are too good to fall for that, although having the VCR going from the start is a great idea. This is a tough game to pick because of the similarity but: Connecticut 78-71.