DaltonJ

FULL hand grip there!!
 

I’m digging the inner arm tat! 😍
I think there’s something really sexy having the top of the singlet rolled down to your waist.

This is a great shot depicting pinning and control techniques used by the top wrestler. Since the top wrestler is grabbing the bottom wrestler’s arm, he’s doing a “wrist ride” or “arm bar” where the top wrestler has control over the bottom wrestler’s arm locked down and to keep the bottom on the mat. Since the bottom is on his stomach though and not his back (both shoulders on the backside need to hit the mat in order to score a pin), a pin from this position is difficult, so my guess is he’s trying to score as many points as possible. (Objective always is to pin - a pin is an automatic win. If not, you always try to score as many points as possible. Most points win if no one has pinned.)
From a wrist ride, the top wrestler can work towards scoring points through a variety of moves such as tilts or rolls.

I wrestled for years and always went commando. Most forms of underwear / jocks etc are going to be uncomfortable under the tightness of a wrestling singlet. The only time I would see guys choose to wear a jockstrap was those who were hung so big it was a little pornographic without.