Bullpen Indicators

Bullpen Indicators are published every Thursday morning during the season, and periodically during the off-season. They contain information about relief pitcher performance, role and opportunity to contribute.


For maximum flexibility when printing, mark the chart with your cursor, and cut/paste into MS Excel.


Pitchers are grouped by team, with the current primary closer listed first.
In the off-season, the pitchers listed are those that may have a chance to
play a significant role in the bullpen for the upcoming season. During the
season, the pitchers are ranked within team first by projected save opportunities, and
then by declining Base Performance Value (BPV).

A. Skills Indicators

Projected values are used for base performance indicators (bb/9, k/9, Cmd, hr/9, BPV, S%). These are weighted between historical performance and current performance.

B. Results

Innings Pitched per Game, or Outs per Game (IP/G)

An indicator of the pitcher's role on the team as well as his use. Is he being used as a situational lefty? In middle/long relief? A short man who is being overworked?

Saves Percentage (Sv%)

Saves / Save Opportunities

The benchmark for a closer is 80%; anything lower and the team may be looking for alternatives.

Bullpen Effectiveness (Pen Eff)

(Wins + Saves + Holds) / (Wins + Losses + SaveOpps + Holds)

A measure of the effectiveness of relief pitchers in pressure situations. How often does a relief pitcher contribute positively to the outcome of the game? Repeated positive impacts on game outcomes breeds managerial confidence, and that confidence paves the way to Opportunity.

C. Opposition Batting Averages

These situational statistics provide insights into a pitcher's current and
future roles. Can he pitch effectively with runners on base? Does he lose or
gain effectiveness as he throws more pitches? (And compare this to his IP/G
for whether he is being used properly.) Is he only a situational pitcher, or
does he possess an equal ability to get right-handers and left-handers out?
(Perhaps indicating someone ready for a more important role?)

For reports published during the off-season, these batting averages reflect the previous season. In-season, these represent current actual values.

LAST UPDATE: May 4, 2007