| 1995 | Port City | Sou | AA | 23 | 0 | 89 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .988 | -- | -- | -- | -- | -- | -- | -- | -- | 589 | 59 | 8 |
| 1996 | Port City | Sou | AA | 24 | 0 | 108 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | -- | .993 | -- | -- | -- | -- | -- | -- | -- | 1.000 | 663 | 79 | 5 |
| 1997 | Pawtucket | IL | AAA | 25 | 0 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .993 | -- | -- | -- | -- | -- | -- | -- | -- | 123 | 10 | 1 |
| | Tacoma | PCL | AAA | 25 | 0 | 81 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .995 | -- | -- | -- | -- | -- | -- | -- | -- | 613 | 49 | 3 |
| | Boston | AL | MLB | 25 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | 1 | 0 | 0 |
| 1998 | Boston | AL | MLB | 26 | 0 | 75 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | -- | .988 | -- | -- | -- | -- | -- | -- | -- | -- | 367 | 32 | 5 |
| 1999 | Boston | AL | MLB | 27 | 0 | 140 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | -- | .990 | -- | -- | -- | -- | -- | -- | -- | -- | 972 | 66 | 11 |
| 2000 | Boston | AL | MLB | 28 | 0 | 128 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | -- | .992 | -- | -- | -- | -- | -- | -- | -- | -- | 867 | 46 | 7 |
| 2001 | Boston | AL | MLB | 29 | 0 | 50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .996 | -- | -- | -- | -- | -- | -- | -- | -- | 425 | 32 | 2 |
| 2002 | Boston | AL | MLB | 30 | 0 | 127 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | -- | .996 | -- | -- | -- | -- | -- | -- | -- | -- | 912 | 55 | 4 |
| 2003 | Boston | AL | MLB | 31 | 0 | 137 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | -- | .990 | -- | -- | -- | -- | -- | -- | -- | -- | 854 | 43 | 9 |
| 2004 | Boston | AL | MLB | 32 | 0 | 130 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | -- | .998 | -- | -- | -- | -- | -- | -- | -- | -- | 880 | 49 | 2 |
| 2005 | Boston | AL | MLB | 33 | 0 | 130 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .990 | -- | -- | -- | -- | -- | -- | -- | -- | 783 | 33 | 8 |
| 2006 | Pawtucket | IL | AAA | 34 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | 3 | 0 | 0 |
| | Boston | AL | MLB | 34 | 0 | 99 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .994 | -- | -- | -- | -- | -- | -- | -- | -- | 647 | 28 | 4 |
| 2007 | Boston | AL | MLB | 35 | 0 | 125 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .994 | -- | -- | -- | -- | -- | -- | -- | -- | 937 | 39 | 6 |
| 2008 | Boston | AL | MLB | 36 | 0 | 131 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .996 | -- | -- | -- | -- | -- | -- | -- | -- | 903 | 42 | 4 |
| 2009 | Boston | AL | MLB | 37 | 0 | 108 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .997 | -- | -- | -- | -- | -- | -- | -- | -- | 856 | 37 | 3 |
| 2010 | Pawtucket | IL | AAA | 38 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | 6 | 1 | 0 |
| | Boston | AL | MLB | 38 | 0 | 39 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 1.000 | -- | -- | -- | -- | -- | -- | -- | -- | 242 | 13 | 0 |
| 2011 | Boston | AL | MLB | 39 | 0 | 68 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- | .993 | -- | -- | -- | -- | -- | -- | -- | -- | 519 | 28 | 4 |
Minor League Totals | 0 | 299 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | -- | .992 | -- | -- | -- | -- | -- | -- | -- | 1.000 | 1997 | 198 | 17 |