P · 16 seasons · 1995 – 2010 · B/T: L/L
Billy Wagner is one of the purest specialists in the database. Of +97.7 career roto value, +55.3 came from saves alone. The peak came in 1999, +11.5, 7th that season and 667th of 51,303 player-seasons on record. The value came from saves (+55.3), WHIP (+20.2) and ERA (+18.7), with no category working against him.
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1995 | HOU | 1 | -2.13 | #547 | #69,853 |
| 1996 | HOU | 37 | -2.28 | #1,007 | #86,282 |
| 1997 | HOU | 62 | -2.20 | #814 | #77,425 |
| 1998 | HOU | 58 | -2.11 | #570 | #65,766 |
| 1999 | HOU | 66 | -2.15 | #602 | #71,823 |
| 2000 | HOU | 28 | -2.21 | #984 | #78,616 |
| 2001 | HOU | 64 | -2.13 | #621 | #68,561 |
| 2002 | HOU | 70 | -2.22 | #959 | #79,483 |
| 2003 | HOU | 78 | -2.13 | #869 | #68,826 |
| 2004 | PHI | 46 | -2.19 | #971 | #76,718 |
| 2005 | PHI | 75 | -2.07 | #549 | #60,507 |
| 2006 | NYM | 70 | -2.08 | #573 | #62,707 |
| 2007 | NYM | 66 | -2.07 | #599 | #60,533 |
| 2008★ | NYM | 45 | -2.06 | #590 | #59,565 |
| 2009 | BOS | 17 | -2.10 | #571 | #64,345 |
| 2010 | ATL | 71 | -2.12 | #582 | #67,547 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1995 | HOU | 1 | -2.16 | #381 | #33,962 |
| 1996 | HOU | 37 | 2.57 | #97 | #10,082 |
| 1997 | HOU | 62 | 6.19 | #41 | #3,921 |
| 1998 | HOU | 58 | 5.95 | #41 | #4,180 |
| 1999★ | HOU | 66 | 11.47 | #7 | #667 |
| 2000 | HOU | 28 | -0.97 | #283 | #23,198 |
| 2001 | HOU | 64 | 7.51 | #32 | #2,629 |
| 2002 | HOU | 70 | 8.00 | #27 | #2,243 |
| 2003 | HOU | 78 | 11.36 | #11 | #697 |
| 2004 | PHI | 45 | 5.61 | #51 | #4,605 |
| 2005 | PHI | 75 | 9.95 | #12 | #1,142 |
| 2006 | NYM | 70 | 9.38 | #18 | #1,435 |
| 2007 | NYM | 66 | 7.46 | #38 | #2,680 |
| 2008 | NYM | 45 | 5.27 | #67 | #5,076 |
| 2009 | BOS | 17 | -0.62 | #288 | #21,331 |
| 2010 | ATL | 71 | 10.74 | #8 | #874 |
★ Best season by Z