I've only used him once, as you know Speed is a primary attribute for me, but I picked him up just after mid-season, dumping Steinfeldt, who was woefully underperforming, and Henke to pick up Wade & Tincup. after 96 games I went from 4th to winning the division.
No numbers handy, but I have used him several times and was never disappointed. Mind you I was not overwhelmed either but he'll usually give you decent defense with a .300 plus BA and a .400 plus OBP.