Hernandez has earned a walk 1,084 times while being called out on strikes on 1,029 plate appearances. His on-base percentage sits at .383 and he holds a career OPS of .425. He has a total of 1,131 runs and has 1,079 RBIs. He has hit it out of the park 163 times, as well as 3,245 total bases and a .042 slugging %. For the 7,500 at-bats in his baseball career, Hernandez has recorded a batting average of .294 in addition to having 2,208 base knocks.
For the year, Hernandez has notched 7 runs, amassed 8 RBI and has 1 home runs. He has gotten a free base 14 times and has compiled an on-base percentage of .283. Hernandez has a total of 26 base hits in 130 at-bats for an average at the plate of .200. He has gone down swinging 17 times while amassing 31 bases in total. He has recorded an OPS of 0.521 as well as a SLG of .238.
| Year | Team | BA | HR | H | BB | R | RBI | OBP | PA | AB | OPS | OPS+ | 2B | 3B | G | SLG | SB | CS | TB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | .296 | 162 | 2,182 | 1,070 | 1,124 | 1,071 | .384 | 8,553 | 7,370 | .821 | 128 | 426 | 60 | 2,088 | .436 | 98 | 63 | 3,214 | 1,012 | |
| 1990 | CLE | .200 | 1 | 26 | 14 | 7 | 8 | .283 | 145 | 130 | .521 | 49 | 2 | 0 | 43 | .238 | 0 | 0 | 31 | 17 |
| 1989 | NYM | .233 | 4 | 50 | 27 | 18 | 19 | .324 | 244 | 215 | .649 | 91 | 8 | 0 | 75 | .326 | 0 | 3 | 70 | 39 |
| 1988 | NYM | .276 | 11 | 96 | 31 | 43 | 55 | .333 | 384 | 348 | .750 | 120 | 16 | 0 | 95 | .417 | 2 | 1 | 145 | 57 |
| 1987 | NYM | .290 | 18 | 170 | 81 | 87 | 89 | .377 | 676 | 587 | .813 | 120 | 28 | 2 | 154 | .436 | 0 | 2 | 256 | 104 |
| 1986 | NYM | .310 | 13 | 171 | 94 | 94 | 83 | .413 | 652 | 551 | .859 | 140 | 34 | 1 | 149 | .446 | 2 | 1 | 246 | 69 |
| 1985 | NYM | .309 | 10 | 183 | 77 | 87 | 91 | .384 | 682 | 593 | .814 | 129 | 34 | 4 | 158 | .430 | 3 | 3 | 255 | 59 |
| 1984 | NYM | .311 | 15 | 171 | 97 | 83 | 94 | .409 | 657 | 550 | .859 | 143 | 31 | 0 | 154 | .449 | 2 | 3 | 247 | 89 |
| 1983 | TOT | .297 | 12 | 160 | 88 | 77 | 63 | .396 | 633 | 538 | .829 | 131 | 23 | 7 | 150 | .433 | 9 | 5 | 233 | 72 |
| 1983 | STL | .284 | 3 | 62 | 24 | 34 | 26 | .352 | 244 | 218 | .784 | 116 | 15 | 4 | 55 | .431 | 1 | 1 | 94 | 30 |
| 1983 | NYM | .306 | 9 | 98 | 64 | 43 | 37 | .424 | 389 | 320 | .858 | 140 | 8 | 3 | 95 | .434 | 8 | 4 | 139 | 42 |
| 1982 | STL | .299 | 7 | 173 | 100 | 79 | 94 | .397 | 694 | 579 | .810 | 127 | 33 | 6 | 160 | .413 | 19 | 11 | 239 | 67 |
| 1981 | STL | .306 | 8 | 115 | 61 | 65 | 48 | .401 | 444 | 376 | .864 | 142 | 27 | 4 | 103 | .463 | 12 | 5 | 174 | 45 |
| 1980 | STL | .321 | 16 | 191 | 86 | 111 | 99 | .408 | 690 | 595 | .902 | 147 | 39 | 8 | 159 | .494 | 14 | 8 | 294 | 73 |
| 1979 | STL | .344 | 11 | 210 | 80 | 116 | 105 | .417 | 698 | 610 | .930 | 151 | 48 | 11 | 161 | .513 | 11 | 6 | 313 | 78 |
| 1978 | STL | .255 | 11 | 138 | 82 | 90 | 64 | .351 | 633 | 542 | .741 | 108 | 32 | 4 | 159 | .389 | 13 | 5 | 211 | 68 |
| 1977 | STL | .291 | 15 | 163 | 79 | 90 | 91 | .379 | 645 | 560 | .837 | 125 | 41 | 4 | 161 | .459 | 7 | 7 | 257 | 88 |
| 1976 | STL | .289 | 7 | 108 | 49 | 54 | 46 | .376 | 428 | 374 | .803 | 127 | 21 | 5 | 129 | .428 | 4 | 2 | 160 | 53 |
| 1975 | STL | .250 | 3 | 47 | 17 | 20 | 20 | .309 | 207 | 188 | .671 | 83 | 8 | 2 | 64 | .362 | 0 | 1 | 68 | 26 |
| 1974 | STL | .294 | 0 | 10 | 7 | 3 | 2 | .415 | 41 | 34 | .856 | 140 | 1 | 2 | 14 | .441 | 0 | 0 | 15 | 8 |