SOONERS How Otega Oweh is starting to steal the show in limited minutes for OU men’s basketball Justin Martinez Oklahoman View Comments NORMAN — For some freshmen, adjusting to Big 12 play can be a challenge. It’s a physical, veteran-led stretch of games that yields no nights off. All 10 teams are competing for a bid in the NCAA Tournament, making it the top conference in the nation. And yet there stood OU freshman Otega Oweh, clapping confidently as he wreaked havoc on defense during the first half of a 62-60 loss to 21st-ranked Baylor on Saturday. The first-year guard…