Injuries have limited Romero’s innings over the past couple of years, but he has put up some good numbers overall. Since 2008 he has pitched in 162 games over 112.1 innings with a 3.04 ERA.
Romero seems like a ticking time bomb though. He tested positive for steroids back in 2008 and has since had two injury plagued seasons. Also, his ERA isn’t terrible, but it seems like that’s only pure luck.
His walk rate during his career is 5.1 BB/9 and it has been worse the last two seasons at 7.1 BB/9. He did issue a lot of intentional passes last season for a reliever, but even disregarding those he has walked 35 batters to just 40 strikeouts over the past two seasons.
If he was used strictly to get left handed batters out and didn’t face righties at all then maybe he’s a viable option. In 2010 he held lefties to a .217 batting average and a .600 OPS and showed less of a propensity to walk them.
He will kill the Yankees though if Joe Girardi allowed him to stay in against righties at all. Right handed batters only hit .231 against him last year, but had an amazing .452 OBP against him. No thanks.