Jay Bruce: Power Upside on Your Waiver Wire

by Eno Sarris // 

If you took a look at Jay Bruce on August 26, you might not have come away very impressed. He had a .265/.333/.430 line that morning, with 13 home runs. Even looking for power alone, you might have been forgiven for moving along to another player on the wire. How could someone with 13 home runs this deep into the season be a power pickup?

What a difference a few days make. Starting August 27, Bruce has gone eight for his last 15 with five home runs. Now his current line (.274/.343/.464), with 18 home runs, looks a lot better. In case you are in one of the 36% of Yahoo fantasy leagues where Bruce is a free agent, it’s worth unpacking his upside a little further.

In the minor leagues, Bruce had a .243 ISO (isolated slugging percentage, or slugging minus batting average); that number would rank in the top 20 if he had put that together in the major leagues this year.

One of the reasons we use ISO instead of straight slugging percentage is shown when you delve into Bruce’s history in the major leagues. His .462 slugging percentage doesn’t look that great given his position – even the average right fielder this year has put together a .448 slugging percentage. But Bruce is a moderate flyball hitter (43.2% this year), and flyballs tend to produce low batting averages on balls in play. Sure enough, Bruce has a mediocre career BABIP (.287), and that’s one of the reasons his batting average is a little low (.253 career). So instead we use ISO, to tease out his power and avoid dealing with all the singles. Bruce has a career .209 ISO in the majors, which would rank him between David Wright and Andre Ethier on the leaderboard right now. That is decidedly above average.

This year, Bruce’s HR/FB percentage is 12.3%, down from 16.8% in 2009. There is little reason for a young, developing player’s HR/FB to go down. Just take a look at Ethier – who has kept his HR/FB around 14 and 15% the last three years after debuting around 9% – for an example of your typical power progression. 

Bruce has a .190 ISO so far in 2010, but of course a week ago that was .165. And last year, it was .246. We know from past research that ISO is one of the last statistics to become reliable, and it usually does so around 550 plate appearances. Bloomberg Sports Fantasy Tool projects Bruce for a .212 ISO going forward as the year-to-end projections below show.

BruceGrab.jpgThere are few men on the waiver wire that can provide pop like Bruce can in the final weeks of the season. If he’s out there in your league, pick up him up right away. If you are thinking of trading for him in a keeper league, do it soon, before he hits another strong week (or another year of development) and his owner decides not to trade him away.

For more on Jay Bruce and other power options on your waiver wire, check out Bloomberg Sports’ Fantasy Tools.

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