The Mets came into this season with a strict bullpen hierarchy in place. In save situations, Frank Francisco was going to pitch the ninth inning. Jon Rauch was going to pitch the eighth. And Ramon Ramirez was going to pitch the seventh.

But it has not worked out as planned for the Mets, who endured a poor stretch from Francisco in May, placed Ramirez on the disabled list earlier this month and are now dealing with Rauch's nightly struggles. As a result, manager Terry Collins said before Tuesday's 11-2 victory over the Rays that Francisco is the only reliever in his bullpen who still has a set role.

"We're going to take a look at some options we have," Collins said. "(Pitching coach) Dan (Warthen) and I talked quite extensively on the bullpen and where we've got to fit guys and where guys might be. There are no given guys now in any certain roles except for Frankie right now."

Rauch's struggles in particular precipitated the change. After reeling off 11 consecutive scoreless appearances to open the season, Rauch has since posted an 8.36 ERA since April 29. After serving up Russell Martin's walk-off homer Sunday at Yankee Stadium, Rauch re-tweeted more than a dozen profanity-laced messages from his @jrauch60 Twitter account.

"It's funny to me that people think they can take it that far with no consequences," Rauch said. "It's interesting for me to be approached with that kind of language. If you're going to be bold enough to say that kind of stuff and stand behind it, then I'm going to let everybody see it. I think it gives people a lot more insight as to what we go through as players and as people in the public eye."

With Rauch no longer an eighth-inning option, Collins said that both Bobby Parnell and Miguel Batista will see increased work in high-leverage situations. Lefty specialist Tim Byrdak will also continue to see work against the toughest left-handers in opposing lineups.