Greinke (1-0) allowed just three hits while striking out four without a walk over six scoreless innings in Thursday's victory over the Athletics.
Although he didn't rack up strikeouts the veteran righty was still dominant in his debut, throwing 56 of his 82 pitches for strikes. Although his 4.03 ERA last season doesn't look great, Greinke still put up a 2.80 FIP, so there's no reason for fantasy managers to expect anything other than his usual ace-level performance this season.