.750 in his only season with Philadelphia. Jack Taylor leads this list with 96 victories and 77 defeats, and Wayne Twitchell has the most strikeouts, with 573. Erskine Thomason's 0.00 earned run average (ERA) is the lowest mark on this list; among pitchers who have allowed an earned run, Kent Tekulve, who holds the franchise's single-season record for appearances by a pitcher, has the best mark, with a 3.01 ERA. Among pitchers whose surnames begin with U, Tom Underwood has the best win–loss record, in terms of winning percentage; he won 28 games and lost 20 for a win ratio of .583 in his four seasons with Philadelphia. Underwood's 28 victories are the best among pitchers on this list whose names begin with U; Tom Vickery shares the mark among V-named pitchers. Dutch Ulrich has the most defeats among pitchers whose surnames start with U, with 27 in three seasons. Underwood has 245 strikeouts, best among the U-named pitchers; Vickery leads pitchers whose surnames begin with V in that category, with 177. Al Verdel has the best earned run average (ERA) among pitchers whose surnames start with V; he allowed no runs in his only career appearance for an ERA of 0.00. Ulrich's 3.48 ERA leads the pitchers whose surnames begin with U. Footnotes Key The National Baseball Hall of Fame and Museum determines which cap a player wears on their plaque, signifying "the team with which he made his most indelible mark". The Hall of Fame considers the player's wishes in making their decision, but the Hall makes the final decision as "it is important that the logo be emblematic of the historical accomplishments of that player's career". Players are listed at a position if they appeared in 30% of their games or more during their Phillies career, as defined by Baseball-Reference.com. Additional positions may be shown on the Baseball-Reference website by following each player's citation. Franchise batting and pitching leaders are drawn from Baseball-Reference.com. A total of 1,500 plate appearances are needed to qualify for batting records, and 500 innings pitched or 50 decisions are required to qualify for pitching records. Statistics are correct as of the end of the 2010 Major League Baseball season. Table Turkey Tyson is listed by Baseball-Reference without a position; he never appeared in a game in the field in his major league career. Fred Van Dusen is listed by Baseball-Reference without a