Oklahoma State entered the NIT as a losing team.Now it has a chance to make the NIT semifinals as a winning team.The fourth-seeded Cowboys host second-seeded North Texas Tuesday night in Stillwater with a trip to Indianapolis for next week’s semifinals at stake.Oklahoma State got there by upsetting top-seeded SMU 85-83 Sunday in Dallas when Brandon Newman intercepted Tibet Gorener’s inbounds pass with one second left. Abou Ousmane hit the go-ahead shot, a turnaround jumper, with 33 seconds remaining.Bryce Thompson pumped in 24 points, one off his career high, to lead the team. The Cowboys (17-17) shot 50.8 percent from the field and made 10 of 21 3-pointers.”I appreciate them and their character and their resolve,” Oklahoma State coach Steve Lutz said. “There’s a lot of teams across the country that would have just packed it in, right, and just not competed throughout the season. There’s a lot of teams that just never would have gotten their head above water.”Thompson leads the Cowboys in scoring at 12.9 ppg, while Ousmane hits for 12.4.Meanwhile, the Mean Green (26-8) also advanced in dramatic fashion, nipping Arkansas State 65-63 on Sunday night in Denton, Texas, when Jasper Floyd sank a turnaround jumper with two seconds left. The shot capped a fine all-around effort for Floyd, who finished with 18 points, five rebounds and four assists.