By Chris Rosvoglou Before he went on to become a Heisman Trophy winner at Oklahoma, Baker Mayfield was the starting quarterback for Texas Tech. However, an unfortunate injury resulted in him losing his starting gig. During an appearance on the YNK Podcast, Mayfield opened up about his time at Texas Tech. “Walked on at Texas Tech first, went there for just my freshman semester,” Mayfield said, via 247Sports. “So I got there July seventh or eight — I can’t remember now — but then wound up getting the starting job before the season started and started the first five games, got hurt. Then when I g…