Can this fantasy team contend?

It has its strengths and weaknesses... You have one of the best catchers in the league though. And, Ryan Howard had the 3rd most HR's in the MLB. Jimmy Rollins had a batting average of around .370 at the end of the season, which will allow you to do great in the post season of your league. Besides that, most of your players are somewhat mediocre. You have some decent pitchers however.