Daniel Joseph Serafini (born January 25, 1974 in San Francisco, CA) is a former left-handed baseball relief pitcher who pitched for parts of seven years in MLB. He was taken in the first round (26th overall) by the Minnesota Twins in the 1992 MLB draft.

Dan was a consummate journeyman, playing for the following professional organizations: Twins, Cubs, Padres, Pirates, Giants, Mets, Brewers, Angels, Cardinals, Sultanes de Monterrey (Mexico), Reds, Chiba Lotte Marines (Japan), Orix Buffaloes (Japan), Rockies, Bridgeport Bluefish, Rieleros de Aguascalientes (Mexico), aaaaand Tigres de Quintana Roo (Mexico). His major league record: 15-16 with a 6.04 ERA, 1.72 WHIP, and one save in parts of seven seasons.

In 1996, he was rated by Baseball America as the 76th-ranked prospect in the minor leagues. He made his major league debut on June 25 against the New York Yankees. He started the game and pitched 4.1 innings, gave up 5 runs, and got the loss. It was his only major league game of the year; he pitched for the Salt Lake Buzz in the remainder of the 1996 season.

His first career win was also the only complete game he pitched in his career. He held the Athletics to two runs (one earned) on five hits and two walks on September 8, 1997.

Serafini was one of a fine group of hurlers for the 2005 Chiba Lotte Marines, going 11-4 to help them to the 2005 Japan Series title. He slipped to 0-4, 9.97 in 2006 and 2-5, 5.40 in 2007, prompting his release.

Serafini was 0-1 with a 5.68 ERA for the Yaquis de Obregon in the 2008 Caribbean Series. He allowed 12 baserunners in 6 1/3 IP. He was added to Italy's roster for the 2009 World Baseball Classic and started his team's second game against Canada.

Serafini currently owns the Throw Like a Pro Baseball Academy in the Sparks, Nevada area. He offers baseball players customized personal training, focused on preventing injury and the areas of mechanics, pitching, fielding, and batting. He also owns a bar Oak Tavern (formerly The Bullpen Bar), which was featured on an episode of Bar Rescue that aired on June 28, 2015

(excerpted from Baseball Almanac, 1993 Topps Blog, BR Bullpen & Wikipedia)