The Baseball-Reference.com Play Index Stat of the Day

Through August 18, Marcus Thames had 21 homeruns and 58 hits. Only 2 players in history have completed a season with more than 20 homeruns and less than 60 hits.

Cnt Player            Year HR  H  Age Tm  Lg  G   PA  AB  R  2B 3B RBI  BB IBB  SO HBP  SH  SF GDP  SB CS   BA   OBP   SLG   OPS  Positions
+----+-----------------+----+--+---+---+---+--+---+---+---+---+--+--+---+---+---+---+---+---+---+---+---+--+-----+-----+-----+-----+---------+
    1 Art Shamsky       1966 21  54  24 CIN NL  96 271 234  41  5  0  47  32   1  45   0   3   2   5   0  2  .231  .321  .521  .842 79
    2 Mark McGwire      2001 29  56  37 STL NL  97 364 299  48  4  0  64  56   3 118   3   0   6   7   0  0  .187  .316  .492  .808 *3

Of course, Thames still has a little less than a quarter of the season left.

Here are the players with the fewest hits with at least 25 homeruns:

    1 Mark McGwire         56   29 2001  37 STL NL  97 364 299  48  4  0  64  56   3 118   3   0   6   7   0  0  .187  .316  .492  .808 *3
    2 Mark McGwire         72   32 2000  36 STL NL  89 321 236  60  8  0  73  76  12  78   7   0   2   5   1  0  .305  .483  .746 1.229 *3/467
    3 Paul Sorrento        76   25 1995  29 CLE AL 104 378 323  50 14  0  79  51   6  71   0   0   4  10   1  1  .235  .336  .511  .847 *3D
    4 Johnny Mize          76   25 1950  37 NYY AL  90 305 274  43 12  0  72  29   0  24   2   0   0   4   0  1  .277  .351  .595  .946 *3
    5 Rob Deer             80   25 1991  30 DET AL 134 539 448  64 14  2  64  89   1 175   0   0   2   3   1  3  .179  .314  .386  .700 *9/D
    6 Adam Dunn            82   27 2003  23 CIN NL 116 469 381  70 12  1  57  74   8 126  10   0   4   4   8  2  .215  .354  .465  .819 *73/9D
    7 Gus Triandos         85   25 1959  28 BAL AL 126 468 393  43  7  1  73  65   6  56   3   4   3  12   0  0  .216  .330  .430  .760 *2
    8 Ken Phelps           86   27 1987  32 SEA AL 120 424 332  68 13  1  68  80   5  75   8   0   4   7   1  1  .259  .410  .548  .958 *D/3
    9 Wily Mo Pena         87   26 2004  22 CIN NL 110 364 336  45 10  1  66  22   1 108   6   0   0   7   5  2  .259  .316  .527  .843 98/7
   10 Mark McGwire         87   39 1995  31 OAK AL 104 422 317  75 13  0  90  88   5  77  11   0   6   9   1  1  .274  .441  .685 1.126 *3D

Carlos Pena 2008 comes up at 13th (Of course that could be changing as I type).

Thames 2006 is 14th.

Here and the fewest hits among players with at least 30 homeruns:

    1 Mark McGwire         72   32 2000  36 STL NL  89 321 236  60  8  0  73  76  12  78   7   0   2   5   1  0  .305  .483  .746 1.229 *3/467
    2 Mark McGwire         87   39 1995  31 OAK AL 104 422 317  75 13  0  90  88   5  77  11   0   6   9   1  1  .274  .441  .685 1.126 *3D
    3 Adam Dunn            93   32 2008  28 TOT NL 120 492 394  61 16  0  77  87   7 126   6   0   5   4   2  1  .236  .378  .520  .898 *7/9D
    4 Barry Bonds          93   34 1999  34 SFG NL 102 434 355  91 20  2  83  73   9  62   3   0   3   6  15  2  .262  .389  .617 1.006 *7/D
    5 Jose Valentin        97   30 2004  34 CHW AL 125 504 450  73 20  3  70  43   4 139   3   6   2   5   8  6  .216  .287  .473  .760 *6/D

and 40:

    1 Hank Aaron          118   40 1973  39 ATL NL 115 465 392  84 12  1  96  68  13  51   1   0   4   7   1  1  .301  .402  .643 1.045 *79
    2 Matt Williams       119   43 1994  28 SFG NL 112 483 445  74 16  3  96  33   7  87   2   0   3  11   1  0  .267  .319  .607  .926 *5
    3 Jay Buhner          123   40 1995  30 SEA AL 126 539 470  86 23  0 121  60   7 120   1   2   6  15   0  1  .262  .343  .566  .909 *9/D
    4 Mark McGwire        125   42 1992  28 OAK AL 139 571 467  87 22  0 104  90  12 105   5   0   9  10   0  1  .268  .385  .585  .970 *3
    5 Darrell Evans       125   40 1985  38 DET AL 151 594 505  81 17  0  94  85  12  85   1   1   2   5   0  4  .248  .356  .519  .875 *3D/5