Lengkepan kalimah di handap ieu: Sanggeus lulus ti Universitas Delaware, anjeunna mimiti umpiring di liga minor di 1982, antukna ngahontal Asosiasi Amérika saméméh keur diwanohkeun ka NL. Manéhna jadi wasit dina tilu World Series (2004, 2009, 2012) jeung dina dua All-Star Games (1998 jeung 2009). Anjeunna ogé geus umpired di 2014 Liga Nasional Wild Card Game, tujuh American League Championship Series (2002, 2007, 2008,
2010, 2014, 2016, 2018), sarta dina 10 Divisi Series (1997, 1999, 2000, 2001, 2003, 2004, 2006, 2009, 2011, 2012).