Starting Pitchers Tables Guide Home
Table Name Full Name Explanation
Rank Position Rank Pitcher's rank by Win Shares Quotient (see below).
Name Pitcher Name Bolded name indicates membership in the National Baseball Hall of Fame.
HOF Hall of Fame BBW indicates pitcher was elected by the Baseball Writers Association of America.
Vet indicates pitcher was elected by the Veterans Committee.
Other indicates pitcher was elected as a manager, executive or other role.
Ban indicates pitcher who should be in the Hall of Fame, but is excluded for cause
detrimental to baseball. 
MVP Most Valuable Player Rank in league's MVP voting. Shaded area indicates award was not given that season.
CY Cy Young Award Rank in league's Cy Young Award voting. Shaded area indicates award was not given that
season.
All-Star All-Star All-Star game status for specified pitcher. "A" indicates starter. "a" indicates spot on
All-Star roster. "A-inj" and "a-inj" indicate All-Star selection, but withdrew due to 
injury. "A-out" and "a-out" indicate All-Star selection, but withdrew for reasons other
than injury. "A-rep" and "a-rep" indicate replacement of All-Star player unable to play.
"A*" and "a*" indicate All-Star Game was not played that season due to World War II.
Shaded area indicates All-Star Game was not played that season.
Rookie Rookie (of the Year) R indicates rookie status. R-number indicates rank in league's Rookie of the Year voting.
Number only indicates rank in league's Rookie of the Year voting, the votes made in error
as the pitcher no longer had rookie status.
Team Team Team(s) pitcher pitched for as a starting pitcher in specified league during specified
season.
Stdg Standing Team standing(s) for team(s) pitched for. Bold indicates winner of final post-season
championship series (World Series since 1903). Italics indicates loser of final post-
season championship series. Both indicate tie of final post-season championship series.
Throws Throws Pitching side. R - Right, L - Left, U - Unknown.
Age Pitcher's age Pitcher's age as of June 30 for that season. Blank indicates unknown age.
Other Pos Other Positions All other positions pitcher qualified for in all leagues during specified season. 
GS Games Started Games started in specified league during specified season. Minimum qualification for table
is 15 games started or 12 decisions and 100 innings as a starting pitcher. Note that the 
alternate requirement allows starting pitchers with sufficient starts and innings, making
a significant contribution to his team's season but just below the 15 start threshold,
to appear on the table. Over one hundred thirty pitchers, primarily from the 19th Century,
have been added to the tables through 2008 under this provision.
CG Complete Games Complete games pitched in specified league during specified season.
Sho Shutouts Shutouts pitched in specified league during specified season.
W Wins Wins earned as a starting pitcher in specified league during specified season.
L Losses Losses earned as a starting pitcher in specified league during specified season.
W/S% Win/Start Percentage Wins as a starting pitcher divided by games started. This statistic substitutes for the 
traditional win/loss percentage. While W/L% is a valuable measurement, W/S% looks at
winning ability by starting pitchers from a slightly different viewpoint. 
Both statistics are limited in measuring a starting pitcher's performance in earning wins
since run support and the bullpen's performance affects his ability to earn wins. The
difference is that No Decisions play a role in W/S%, but not in W/L%. Win/loss percentage
focuses on those decisions earned by a starting pitcher, while W/S% focuses on the ability
to earn the win himself by pitching deeply into the game and minimizing reliance upon the
bullpen. Those starting pitchers with a high W/S% not only pitch more quality innings,
while sometimes still getting high run support, but also reduce their No Decision total.
ND No Decisions No Decisions are games started by starting pitchers in which he does not earn a win or a 
loss. The formula is games started minus wins minus losses.
Innings Innings Innings pitched as a starting pitcher in specified league during specified season.
Innings are pro-rated estimates for 1876-1953 and are actual figures for 1954 on.
Hits Hits Hits given up as a starting pitcher in specified league during specified season.
Hits are pro-rated estimates for 1876-1953 and are actual figures for 1954 on.
HR Home Runs Home runs given up as a starting pitcher in specified league during specified season.
Home runs are pro-rated estimates for 1876-1953 and are actual figures for 1954 on.
R Runs Runs given up as a starting pitcher in specified league during specified season.
Runs are pro-rated estimates for 1876-1953 and are actual figures for 1954 on.
ER Earned Runs Earned runs given up as a starting pitcher in specified league during specified season.
Earned runs are pro-rated estimates for 1876-1953 and are actual figures for 1954 on.
SO Strikeouts Strikeouts made as a starting pitcher in specified league during specified season.
Strikeouts are pro-rated estimates for 1876-1953 and are actual figures for 1954 on.
SO/WH Strikeouts/(Walks + Hits) Strikeouts/(hits + walks) made as a starting pitcher in specified league during specified
season. Ratio is based on pro-rated estimates for 1876-1953 and is based on actual figures
for 1954 on.
This ratio is a combination of two ratios, both measuring pitching effectiveness. 
Strikeouts per inning measures strikeout effectiveness, a higher figure being more
effective. Walks plus hits per inning (WHIP) measures the ability to give up as few
baserunners as possible, a lower figure being more effective. 
Combining these two ratios results in SO/WH, in which a higher figure measures a greater
ability to strike out batters while effectively keeping runners off base. While some
pitchers may strike out many batters per inning, they're not effective in keeping runners
off base. The SO/WH ratio measures the best of both abilities. The A.L. and N.L. SO/WH
leader lists spotlight many of the greatest pitchers in major league history.
ERA Earned Run Average Earned run average made as a starting pitcher in specified league during specified season.
Earned run averages are based on pro-rated estimates for 1876-1953 and on actual figures
for 1954 on.
WS Win Shares Win Shares earned as a starting pitcher in specified league during specified season. Note
that, unlike the hitting positions, no Win Shares are allocated for hitting or fielding
performance as a starting pitcher.
WS/G Win Shares per Game Win Shares earned as a starting pitcher in specified league during specified season
divided by games started as a starting pitcher in specified league during specified
season.
WSQ Win Shares Quotient The final calculation used to rate pitchers, the starting pitcher's Win Shares times the
factor of the square root of his Win Shares per game divided by the league average Win
Shares per game (see below). This quotient thus accounts for both total production (Win
Shares) and pro-rated production (Win Shares per game). The square root is used to modify
the Win Shares per game factor, ensuring that Win Shares carries the heavier weight
in the calculation.
League Average Age Age per game as calculated by weighted average of pitcher's ages times games started
divided by games started.
League Average per 30 Starts Average of starter game statistics per 30 games started. Win start percentage is calculated
on the sum of all games started and wins.
League Average per 200 Innings Average of starter pitching results per 200 innings. The SO/WH ratio and ERA are calculated
on the sum of all innings pitched.
League Avg WS/G Average of Win Shares per game based on the sum of Win Shares.
Average WS/Team Sum of Win Shares divided by number of teams in league for specified season. Note that due
to the 15 games started/12 decision and 100 innings requirement, this figure does not
represent all of the Win Shares earned by a given team for that position, but rather the
Win Shares earned by those pitchers who qualified for the table.
Copyright © 2009 by Andre Lower
Sources:
All-Time Major League Handbook
Win Shares Digital Update
baseball-reference.com
ESPN Baseball Encyclopedia