Roger Clemens debuted on May 15, 1984 and played his final game on September 16, 2007.
Roger Clemens debuted on May 15, 1984, playing for the Boston Red Sox at Fenway Park II; he played his final game on September 16, 2007, playing for the New York Yankees at Yankee Stadium II.
Yes
Roger Clemens played for the Yankees from 1999-2003 and also again in 2007.
Bob Clemens debuted on September 17, 1914 and played his final game on October 2, 1914.
Chet Clemens debuted on September 13, 1939 and played his final game on June 15, 1944.
Clem Clemens debuted on May 15, 1914 and played his final game on September 18, 1916.
Doug Clemens debuted on October 2, 1960 and played his final game on September 27, 1968.
Paul Clemens debuted on April 9, 2013 and played his final game on September 28, 2013.
NFL player Kellen Clemens played for Oregon.
The Boston Red Sox
Roger Clemens played in 32 games at pitcher for the Houston Astros in 2005, starting in all of them. He played for a total of 634 outs, equivalent to 23.48 9-inning games. He made 8 putouts, had 36 assists, and committed one error, equivalent to .043 errors per 9-inning game. He had one double play.
Roger Clemens played in 15 games at pitcher for the Boston Red Sox in 1985, starting in all of them. He played for a total of 295 outs, equivalent to 10.93 9-inning games. He made 12 putouts, had 9 assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had one double play.