The Cubs have made a few transactions and one of them might spell the end to his career. Koyie Hill was let go by the Cubs this past offseason and after about a dozen catchers were injured on the team they were forced to bring him back. Now he's gone and he's probably not good enough to continue playing at the MLB level. We should take a minute to remember his career.
Hill owns a career .249 wOBA (42 wRC+). He hit .210/.271/.294 over 9 seasons. Six of them were in a Cubs uniform. 834 of his 966 career plate appearances came as a Cub and he hit .207/.266/.290. He hit 8 home runs and 7 of them were with the Cubs. The amount of time he spent wearing blue pinstripes and the overall numbers probably means he'll have his uniform retired. Expect a ceremony later this season.
It will be most difficult to replace Hill, but someone has to take his place and the unfortunate person who has to fill Hill's mitt is Welington Castillo. On May 19th Castillo was placed on the DL with a right knee sprain. He appeared in 5 rehab games with the Tennessee Smokies and went 4-11 with a couple home runs.
Ian Stewart was placed on the DL with a sore wrist, which has apparently been hurting for a year now. The best that can be said about Stewart's 2012 season is that he was better than Koyie Hill. Luis Valbuena takes his place on the roster. Hopefully the 26 year old can improve upon his career .278 wOBA. He was hitting well in AAA.
He hit .300/.376/.502 in just under 250 plate appearances with the Iowa Cubs. The .378 wOBA is nearly identical to the .376 wOBA he posted last season in AAA with the Indians. Valbuena has more than proven he can hit AAA pitching very well, but has yet to show he can do much at the big league level. On this team he'll probably get that chance.