Kristi Scales, the sideline reporter for the Dallas Cowboys radio network, answered questions about the team in a live chat recently. Here are some highlights: Aside from rookies, who has the most to gain from a good showing at OTAs?Scales: Second year tight end Blake Jarwin has the opportunity this summer to rocket up the Cowboys' tight end depth chart.Last year, as an undrafted rookie free agent, he was buried on the depth chart behind Jason Witten, James Hanna, Geoff Swaim, and Rico Gathers, among others.This year, with Witten and Hanna newly retired, Swaim is the most experienced tight end on the depth chart.Jarwin has had a full offseason to work within the offseason strength and conditioning program.