1
Cust had a 0.79 IsoP against LHP in '09 and a 0.88 Isop in '10 vs LHP.
Hes really fallen off there, I think he needs to be platooned.
Against RHP he probably can still manage a low-to-mid 800s OPS.
If you also bench him against power fly-ball pitchers, you'd be maximizing his value.