1B · 20 seasons · 1995 – 2014 · B/T: L/R
Few careers score higher: Jason Giambi sits 1st of 0 hitters all-time in roto value, built over 20 seasons. His best year was 2002: +15.6 roto value, 9th that season and 966th of 111,420 player-seasons on record. The value came from home runs (+43.1), RBI (+37.1) and runs (+28.6), with no category working against him.
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1995 | OAK | 54 | 0.67 | #270 | #27,164 |
| 1996 | OAK | 140 | 6.70 | #106 | #9,995 |
| 1997 | OAK | 142 | 7.03 | #99 | #9,385 |
| 1998 | OAK | 153 | 9.86 | #65 | #5,090 |
| 1999 | OAK | 158 | 12.29 | #32 | #2,736 |
| 2000 | OAK | 152 | 14.59 | #17 | #1,388 |
| 2001 | OAK | 154 | 15.14 | #19 | #1,160 |
| 2002★ | NYY | 155 | 15.64 | #9 | #966 |
| 2003 | NYY | 156 | 9.18 | #75 | #5,962 |
| 2004 | NYY | 80 | -0.23 | #336 | #31,737 |
| 2005 | NYY | 139 | 8.02 | #82 | #7,716 |
| 2006 | NYY | 139 | 8.41 | #79 | #7,045 |
| 2007 | NYY | 83 | 1.26 | #278 | #24,743 |
| 2008 | NYY | 145 | 7.22 | #111 | #9,063 |
| 2009 | OAK | 102 | 0.53 | #312 | #27,862 |
| 2010 | COL | 87 | 0.65 | #306 | #27,295 |
| 2011 | COL | 64 | 1.83 | #267 | #22,693 |
| 2012 | COL | 60 | -1.76 | #484 | #45,747 |
| 2013 | CLE | 71 | -0.42 | #374 | #32,948 |
| 2014 | CLE | 26 | -2.34 | #1,215 | #91,459 |
★ Best season by Z