A.J. Pollock was a two-homer hero this week. Gerardo Parra is off to a hot start. But are their heroics in fantasy destined to be short-lived? Scott Engel and Adam Ronis examine their outlooks. Listen to the RotoExperts every weekday on Sirius XM Fantasy Sports Radio, Sirius 210, XM 87 from 6 to 11 am ET, and on Saturdays from 10 a.m. to 1 p.m.