I didn't see most of the game, but from reading the post game write ups, IMO this sounds (at least from the pitching end) on Roberts.
It sounded like Kelly was rushed into the game, ie not given the proper time to warm up, and ended up getting on the side of a Second to Walker (a former Dodgers draft pick) and hanging it.
Heck, he even blindsided his SP by pulling him after 5.1 innings ... No communication.
Offensively, they had ample opportunity to score more than 4 runs.