
| 2002-03 | QMAAA | Gatineau L'Intrépide | 42 | 7 | 33 | 40 | 0 | - | - | 38 |
| 2003-04 | QMJHL | Drummondville | 10 | 0 | 1 | 1 | -1 | - | - | 0 |
| 2004-05 | QMJHL | Drummondville | 69 | 25 | 51 | 76 | -6 | - | - | 25 |
| 2005-06 | QMJHL | Drummondville | 58 | 44 | 72 | 116 | 19 | - | - | 92 |
| 2006-07 | QMJHL | Drummondville | 14 | 6 | 19 | 25 | 6 | - | - | 24 |
| 2007-08 | NHL | Columbus Blue Jackets | 17 | 1 | 1 | 2 | -4 | 13 | 7.7% | 6 |
| 2007-08 | AHL | Syracuse | 42 | 15 | 36 | 51 | 9 | - | - | 51 |
| 2008-09 | NHL | Columbus Blue Jackets | 31 | 10 | 15 | 25 | 12 | 59 | 17.0% | 17 |
| 2009-10 | NHL | Columbus Blue Jackets | 79 | 9 | 27 | 36 | -17 | 125 | 7.2% | 48 |
| 2010-11 | NHL | Columbus Blue Jackets | 74 | 17 | 30 | 47 | -11 | 183 | 9.3% | 55 |
| 2011-12 | NHL | Columbus Blue Jackets | 74 | 14 | 27 | 41 | -20 | 125 | 11.2% | 42 |
| 2012-13 | NHL | Columbus Blue Jackets | 34 | 7 | 11 | 18 | -2 | 63 | 11.1% | 16 |
| 2012-13 | NHL | New York Rangers | 13 | 5 | 6 | 11 | 3 | 25 | 20.0% | 0 |
| 2012-13 | Austria | Salzburg | 6 | 4 | 1 | 5 | - | - | - | 6 |
| 2013-14 | NHL | New York Rangers | 81 | 18 | 27 | 45 | 2 | 159 | 11.3% | 46 |
| 2014-15 | NHL | New York Rangers | 80 | 19 | 41 | 60 | 9 | 168 | 11.3% | 34 |
| 2015-16 | NHL | New York Rangers | 80 | 27 | 31 | 58 | 12 | 182 | 14.8% | 30 |
| 2016-17 | NHL | Ottawa Senators | 81 | 14 | 25 | 39 | 12 | 195 | 7.2% | 24 |
| 2017-18 | NHL | Ottawa Senators | 58 | 18 | 20 | 38 | -1 | 164 | 11.0% | 30 |
| 2017-18 | NHL | Pittsburgh Penguins | 14 | 3 | 5 | 8 | 1 | 33 | 9.1% | 4 |
| 2018-19 | NHL | Pittsburgh Penguins | 40 | 9 | 6 | 15 | -6 | 62 | 14.5% | 29 |
| 2018-19 | NHL | Florida Panthers | 10 | 1 | 3 | 4 | -6 | 16 | 6.3% | 2 |
| 2018-19 | NHL | Colorado Avalanche | 20 | 4 | 0 | 4 | -7 | 32 | 12.5% | 8 |
| 2019-20 | NHL | New York Islanders | 66 | 10 | 22 | 32 | -2 | 110 | 9.1% | 16 |
| 2020-21 | NHL | Arizona Coyotes | 53 | 8 | 12 | 20 | -10 | 67 | 11.9% | 12 |
| 2021-22 | NHL | Philadelphia Flyers | 31 | 6 | 10 | 16 | 6 | 46 | 13.0% | 10 |
| 2021-22 | NHL | Edmonton Oilers | 15 | 2 | 1 | 3 | -2 | 16 | 12.5% | 6 |
| 2022-23 | NHL | Ottawa Senators | 62 | 13 | 10 | 23 | 3 | 92 | 14.1% | 30 |
| 2025-26 | NL | Genève-Servette HC | 1 | 0 | 0 | 0 | 0 | - | - | 0 |
| NHL Totals | – | 1013 | 215 | 330 | 545 | -28 | 1935 | 11.1% | 465 | |
| AHL Totals | – | 42 | 15 | 36 | 51 | 9 | - | - | 51 | |
| Juniors Totals | – | 151 | 75 | 143 | 218 | 18 | - | - | 141 | |
| 2003-04 | QMJHL | Drummondville | 7 | 0 | 0 | 0 | -2 | - | - | 0 |
| 2004-05 | QMJHL | Drummondville | 6 | 1 | 5 | 6 | - | - | - | 6 |
| 2005-06 | QMJHL | Drummondville | 7 | 5 | 4 | 9 | -1 | - | - | 10 |
| 2006-07 | QMJHL | Drummondville | 12 | 9 | 15 | 24 | 4 | - | - | 12 |
| 2007-08 | AHL | Syracuse | 13 | 4 | 9 | 13 | -2 | - | - | 10 |
| 2012-13 | NHL | New York Rangers | 12 | 2 | 10 | 12 | 1 | 22 | 9.1% | 2 |
| 2013-14 | NHL | New York Rangers | 23 | 6 | 6 | 12 | 4 | 45 | 13.3% | 8 |
| 2014-15 | NHL | New York Rangers | 19 | 9 | 7 | 16 | 9 | 55 | 16.4% | 20 |
| 2015-16 | NHL | New York Rangers | 5 | 1 | 3 | 4 | -1 | 11 | 9.1% | 0 |
| 2016-17 | NHL | Ottawa Senators | 19 | 4 | 7 | 11 | -3 | 49 | 8.2% | 8 |
| 2017-18 | NHL | Pittsburgh Penguins | 12 | 1 | 3 | 4 | -1 | 21 | 4.8% | 4 |
| 2018-19 | NHL | Colorado Avalanche | 9 | 0 | 1 | 1 | -2 | 11 | 0.0% | 8 |
| 2019-20 | NHL | New York Islanders | 18 | 2 | 6 | 8 | 1 | 34 | 5.9% | 6 |
| 2021-22 | NHL | Edmonton Oilers | 1 | 0 | 0 | 0 | 0 | 0 | 0.0% | 0 |
| NHL Totals | – | 118 | 25 | 43 | 68 | 8 | 248 | 10.1% | 56 | |
| AHL Totals | – | 13 | 4 | 9 | 13 | -2 | - | - | 10 | |
| Juniors Totals | – | 32 | 15 | 24 | 39 | 1 | - | - | 28 | |
| Season | Opponent | Date | G | A | P | +/- | PIM | PPG | SHG | S | Shifts | TOI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Regular | vs PHI | Mar 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 5:42 |
| Regular | vs FLA | Mar 27 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 2 | 17 | 10:08 |
| Regular | @ NJD | Mar 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 9:58 |
| Regular | vs TBL | Mar 23 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 2 | 19 | 11:23 |
| Regular | @ BOS | Mar 21 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 16 | 9:23 |