Jenkins, 36 in July, hasn't played since the 2008 season, when he hit .246/.301/.392 with nine homers in 322 plate appearances for the Phillies. They released him at the end of Spring Training last year. Prior to that, Jenkins spent ten seasons with the Brewers, where he's fifth on the team's all-time list with 1,221 career hits.
If he does in fact all it quits, Jenkins will retire as a .275/.344/.490 hitter with 221 home runs. Not to shabby at all. Baseball Reference says he's earned more than $46MM during his career, so it should be a happy retirement.