A new challenger approaches

[TheShyGuy]

The top right's closest arm looks pretty weird to me. At first I thought it was the shoulder being too low, but I messed with it a little bit and its seems that the elbow is what I found too low. I'd show the edit, but it's not worth it. Also, the same arm could be less bent -relaxed. Try opening up the forearm so that the hand points more towards his left/closest foot. Hmm...It might just be me, but the further arm seems shorter compared to the other?

With the bottom guy, you need to work on showing depth better. Both of his gloves look like they're touching his chest. Or maybe the real problem is due to the posing? His arms seem to be fully bent and pointing back instead of out in front of his body. The gloves are below his chin...but aren't they supposed to be more out and in front to defend his face?