Not a great match by any standards but a good workmanlike win for Denis. Pella is a good clay player but perhaps not his best here. Up against qualifier Martinez (not Ramirez as OP wrote) next which shouldn't be a worry.
Had the match in the background, but didn't really watch, just glanced over every now and again. From the little I saw, Pella was terrible. The most encouraging part was the return of MY to Shapo's box.