Since the start of the Yankees series, Tellez is batting .282 with a 99 wRC+, a homer, 2 doubles and a walk. The results haven't been spectacular, but have been about as close to "average" as one can get after a slow start to the season. He's also been CRUSHING baseballs with an average EV of 97.5 and a 65.6% hard hit % in that same time-span.
He JUST missed a homer last night, as well.
Edit: His HH% and Average EV are highest on the team BTW. Yes, higher than Vladdy's.