Oklahoma City secured a commanding 3-0 lead in Phoenix, and it has to be excited about its young guard after his first playoff start. Heading into Game 3 in Phoenix, the Thunder had plenty of storylines surrounding the matchup. Of course, none was bigger than the question of who would step up for the Thunder after Jalen Williams' injury. An MVP-like performance from Shai Gilgeous-Alexander was the driving force in the Thunder’s Game 3 win, but Ajay Mitchell also showed that he can carry some of the load with Williams out of the lineup. While it seemed clear that Mitchell would see a larger role with Williams on the sidelines, that was all but confirmed when Mark Daigneault inserted the second-year player into the starting lineup. Simply looking at the box score, it was far from an ideal first playoff start for Mitchell. He finished with 15 points and six rebounds in 32 minutes, but he managed to shoot only 5-of-20 from the field.…