Jesus Colome was designated for assignment after the Nats' victory on the Fourth of July (Saturday). That roster move was long overdue. Colome had an 8.40 ERA over 16 appearances this season. He walked far too many batters and generally brought the pace of games down to a crawl. This contributed to the Nats' defensive lapses as the defensive players had to stand around out in the field waiting for Colome to throw his pitches, or watch as he walked yet another hitter. Time to bring up another of the youngsters and give him a tryout. Maybe Garrett Mock is ready to return to the big leagues again. But almost anyone would be better than Colome was this year.