How has he pitched 11 seasons if drafted in 2005 and is only 25 years old?

He pitched 21 seasons with the Giants, beginning in 1986.

He pitched two seasons with the Tigers in 1997 and 1998.

He pitched eight seasons in the majors, from 1899 to 1906.

Following his time with Milwaukee, he pitched three more average seasons.

Overall, he pitched three seasons in major league baseball, playing his final game on September 29, 1937.

He pitched two more seasons for the Brewers before being released.

Despite pitching only four full seasons, Clayton has developed a reputation for being a 2nd half pitcher.

After his major league days he pitched three seasons for Columbus.

He is also a good fielder, having pitched three full seasons (2001, 2006 and 2009) without making an error.