LAS VEGAS -- Colorado had seen Arizonas defence at work before, in person and in the Pac-12 tournament quarterfinals. Even knowing what was coming, the Buffaloes didnt stand much of a chance. Unable to match Arizona after a close first half, Colorado lost to the fourth-ranked Wildcats 63-43 in the Pac-12 semifinals on Friday night. "We knew they were good defensively and we knew we were going to have to make some shots to beat them. We couldnt get going," Colorado coach Tad Boyle said. "Their defence had something to do with that. Our offence had something to do with that." Arizona (30-3) crushed Utah in its tournament opener behind a record-setting defensive show. The Wildcats didnt peel open the record book against Colorado, but they sure gave the Buffaloes fits. Unlike its previous win over Colorado, Arizona started slow, allowing the Buffaloes to keep it close at halftime. Once they got rolling, Colorado had no answer for the Wildcats defensive pressure and string of highlight-reel plays that had MGM Grand Garden Arena feeling like McKale Center West. Arizona shot 60 per cent in the second half and held Colorado (23-11) to 5-of-22 shooting in the final 20 minutes to earn a spot Saturdays championship game against UCLA or Stanford. Nick Johnson scored 16 points, Rondae Hollis-Jefferson added 12 and eight rebounds for Arizona. T.J. McConnell facilitated the Wildcats offence and spearheaded the top of the D, finishing with 12 points, five assists and four rebounds "Our defence became great in the second half, but our offence found its flow," Arizona coach Sean Miller said. "We shared the ball. We were more ourselves. It was that combination that really broke the game open." Colorado was able to hang with Arizona behind its defence in the first half. But playing their third game in as many days took its toll on the Buffaloes in the second half and they had no pushback when the Wildcats started to race away. Askia Booker had 20 points to lead Colorado, which shot 29 per cent overall and was outrebounded 41-25. Now the Buffaloes have a two-day wait to see if the NCAA tournament selection committee deems them worthy of the bracket. "Im hoping to get in the tournament," Boyle said. "Im not going to be presumptuous and say were in, because these guys werent with us three years ago when our team didnt get in and deserved to get in. I think were in, but thats not for me to decide or anybody else in this room to decide." Arizona put on a show in its tournament opener, flexing its defensive muscles for everyone to see with an overwhelming quarterfinal victory over Utah. The Wildcats held the Utes to 13 first-half points, 39 overall, 12 field goals and 25 per cent shooting -- all tournament records. The 32-point margin also matched the largest in tournament history. Arizona pulled a similar smothering act on Colorado in the teams last meeting. After a 12-point loss in Tucson, Johnson proclaimed Arizona wasnt that good and that the Buffaloes would beat the Wildcats by 20, even with leading scorer Spencer Dinwiddie out for the season. The Wildcats turned the slight into a fury, holding Colorado without a field goal for the opening 10 minutes and shooting 84 per cent in the second half an 88-61 win -- their first in Boulder since 1973. The Buffaloes got off to a better start this time, scoring 8 1/2 minutes sooner. Colorado still had trouble with Arizonas amoebic defence, though, going 10 of 29 from the floor in the first half. But the Buffaloes had something up their sleeve: A little defence of their own. Contesting shots and digging down on the post for steals, Colorado made life much more difficult than it had back in Boulder, allowing them to stay in the game. The Buffaloes held Arizona to 11-of-29 shooting and forced eight turnovers -- five by centre Kaleb Tarczewski -- that led to 11 points. Colorado held Arizona scoreless for over 4 minutes during a 10-2 run that helped the Buffaloes trim Arizonas nine-point lead to 27-24 at halftime. "I thought we stood a lot in the first half," McConnell said. The second half looked more like the game in Boulder. Arizona picked up the defensive intensity even more and started pouring out the highlights to extend the lead. Johnson had one, flying in for a reverse alley-oop dunk and Hollis-Jefferson matched him with a tomahawk dunk over Josh Scott. Gordon provided one on the defensive end not long after that, soaring up for a clean swat on Johnsons one-handed dunk attempt that sent Arizonas fans bursting out of their seats. In just a couple of minutes, the Wildcats were up 51-32 thanks to a 13-0 run, well on their way to the Pac-12 title game. "In the second half, we were sharper," Miller said. 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Marcus Davenport Saints Jersey .com) - The Golden State Warriors have started another winning streak and theyll try to pad it Tuesday night when they head to Staples Center to face the Los Angeles Lakers.(SportsNetwork.com) - The struggling Winnipeg Jets continue their road trip against the St. Louis Blues tonight. Viewers in the Jets region can watch all the action on TSN Jets at 6:30pm ct/7:30pm et. The game is also available on TSN Radio 1290 in Winnipeg. The Jets have lost four of their last five games and fell to 1-1-1 on the four-game road trip after losing a 3-2 regulation decision Sunday at Colorado. Winnipeg led the contest by a 2-1 score after 40 minutes, but Jan Hejda and Paul Stastny scored third-period goals to lift the Avalanche to the home win. Blake Wheeler and Bryan Little scored for the Jets. Al Montoya made 33 saves but allowed all three goals in the setback. "He was great. He kept the score tight. We really didnt help him too much in the third period," Little said of Montoya. The Blues had won three straight in the series against the Jets before losing a 4-3 shootout decision on Oct. 18 in Winnipeg. The Jets erased a two-goal deficit in the third period and Olli Jokinen scored the decisive shootout goal to cap the come-from-behind win. Tuesdays contest will mark the first trip to St. Louis for the Jets since the franchise relocated from Atlanta prior to the 2011-12 season. The Blues were 4-1-1 in six all-time home tilts against the Atlanta Thrashers. The Blues will try to build off a strong performance in their last outing when they endeed a two-game slide and won for just the second time in five games by pounding the Nashville Predators 6-1 on Saturday.dddddddddddd It was the second- best offensive output of the season for St. Louis, which beat the Florida Panthers by a 7-0 score on Oct. 5. Alexander Steen scored a pair of goals to fuel the rout in Nashville. Steen already has 10 goals in nine games this season, giving him two more markers than he had in 40 games during last years lockout-shortened campaign. He enters Tuesday tied with Alex Ovechkin of the Washington Capitals for the most goals in the NHL this season. "He feels like hes fresh on the ice and when youre fresh, youre confident," Blues head coach Ken Hitchcock said of Steen. "Thats how hes feeling right now." Jaden Schwartz, Alex Pietrangelo and T.J. Oshie each added a goal and an assist, while Derek Roy registered the other goal for the Blues, who have earned at least a point in four straight games, going 2-0-2 during that stretch. Jaroslav Halak stopped 22-of-23 shots to backstop the victory. Halak is expected to get the start again on Tuesday and is 4-2-0 with a 3.31 goals against average in six career games against the Jets. After hosting tonights contest against Winnipeg, the Blues will play their next three games on the road. St. Louis is 4-1-1 as the host this season and 2-0-1 on the road. 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