Zack Greinke was supposed to be the ace of a pitching staff of a Brewers team many believed could win the National League Central Division.

Instead, he has pitched twice for a club that is five games under .500 (15-20) because he fractured a rib playing pickup basketball in February. (If you're the curious type, Greinke said he was going for a rebound and he fell on his side.)

In two starts, he is 1-1 with a 5.40 ERA and an impressive 15 strikeouts in 10 innings.

Last season was a disappointing one for the 2009 American League Cy Young Award winner. In his final season with the Royals, Greinke was 10-14 with a 4.17 ERA, 1.25 WHIP and 181 Ks in 220 innings -- a stark contrast from his 2009 numbers (16-8, 2.16 ERA, 1.07 WHIP and 242 Ks in 229 1/3 innings).

If you own Greinke, you're starting him. But what should you expect from him the rest of the way?

Here is what we know: 1. The Brewers are taking it slowly with the 27-year-old. He has thrown 85 and 89 pitches in his first two starts this season. 2. Don't expect the 2009 Greinke -- the one who averaged 9.5 strikeouts per nine innings.

In his career, Greinke has a norm of 7.6 Ks per nine innings -- a figure that is inflated by his fantastic 2009. His ERA is 3.83, his WHIP 1.26, and he's seven games under .500 (61-68).

Overrated is an overused term in fantasy -- OK, in sports in general -- but we'll go ahead and say it here because it certainly applies. Greinke often is overrated.

In a 12-team league, I'd consider Greinke a No. 4 starter. He isn't among the top 30 at his position in fantasy, and he is a fringe top-40 pick.

Again, you should start him in most formats.

If you have a deep pitching staff, don't look at Greinke as a must-start. In weeks in which he's starting once, he should be anything but a given when you're selecting your lineup.