For more on Hall vs. Penn, Checkout the play-by-play Thanks to MMA Fighting’s Alexander K. Lee.
Round 1: Edward Collantes on-hand to oversee this struggle. It’s Penn pushing forward early on and he’s turned against the crate, however Hall slips out easily. Hall yells a low kick and falls into his spine, Penn making him cover with kicks to the thigh. He’s not going down to participate Hall, who’s attempting to kick at Penn’s thighs. Hall working to join Penn’s leg, but Penn just circling and twisting him. A reset is called for by collantes. Hall throwing high kicks freely, missing, however he’s with success kicking Penn’s leg. Hall explodes having an Imanari roster, he gets Penn down and slaps on a heel hook. Instant tap-out from Penn and also Hall lets go instantly! It looks like Penn’s leg still took some damage though.
Official end result: Ryan Hall def. B.J. Penn via entry (heels hook) at 2:46 of around