I was looking at Michael Morse's (OF, Was) page on Baseball Reference and saw that he's having a pretty good season so far in 2011 (.312, 17 HR in 87 games). Then I noticed that he's 29 years old, and he's never had more than 266 at-bats in his career. It got me to thinking, how often does a player have his first good season at such a late age and go on to have a solid career.
So here's the criteria I researched: How many players had 200 or fewer career hits before their age 29 season, but went on to get 1,000 or more hits.
In order to figure this out, I used Baseball Reference's handy Play Index (which unfortunately requires a subscription now). I took a look at all players who have 1,000 career hits (there are 1,205 of these guys), and then I took a look at all players who had 800+ career hits from age 29 on. I subtracted the difference for guys appearing on both lists (meaning they had 200 or fewer hits through age 28).
There are
Modern Era Players:
| Player | H before 29 | Career H | Years |
| Raul Ibanez | 115 | 1744 | 2001 - 2011 |
| Davey Lopes | 156 | 1671 | 1974 - 1987 |
| Sparky Adams | 101 | 1588 | 1924 - 1934 |
| Ken Williams | 56 | 1552 | 1919 - 1929 |
| Jackie Robinson | 175 | 1518 | 1948 - 1956 |
| Melvin Mora | 119 | 1503 | 2001 - 2011 |
| Otis Nixon | 80 | 1379 | 1988 - 1999 |
| Matt Stairs | 69 | 1366 | 1997 - 2011 |
| Earl Sheely | 171 | 1340 | 1922 - 1931 |
| Jimmy Austin | 0 | 1328 | 1909 - 1929 |
| Mike Kreevich | 181 | 1321 | 1937 - 1945 |
| Kevin Millar | 168 | 1284 | 2001 - 2009 |
| Hank Sauer | 49 | 1278 | 1948 - 1959 |
| Rip Radcliff | 15 | 1267 | 1935 - 1943 |
| Craig Counsell | 171 | 1197 | 2000 - 2011 |
| Hideki Matsui | 0 | 1172 | 2003 - 2011 |
| Randy Velarde | 151 | 1171 | 1992 - 2002 |
| Casey Blake | 26 | 1169 | 2003 - 2011 |
| Tom Paciorek | 136 | 1162 | 1976 - 1987 |
| Jim Eisenreich | 64 | 1160 | 1988 - 1998 |
| Scott Hatteberg | 199 | 1153 | 1999 - 2008 |
| Lefty O'Doul | 14 | 1140 | 1928 - 1934 |
| Gavvy Cravath | 80 | 1134 | 1912 - 1920 |
| Bill Robinson | 190 | 1127 | 1972 - 1983 |
| Paul Lo Duca | 42 | 1112 | 2001 - 2008 |
| Socks Seybold | 19 | 1085 | 1901 - 1908 |
| Mike Easler | 37 | 1078 | 1980 - 1987 |
| Pedro Feliz | 147 | 1065 | 2004 - 2010 |
| George Harper | 88 | 1030 | 1922 - 1929 |
| Frank Baumholtz | 182 | 1010 | 1948 - 1957 |
Pre-Modern Era Players:
| Player | H before 29 | Career H | Years |
| Bones Ely | 152 | 1333 | 1893 - 1902 |
| Dave Foutz | 86 | 1253 | 1886 - 1896 |
| Chief Zimmer | 135 | 1225 | 1890 - 1903 |
| Jack McCarthy | 100 | 1205 | 1898 - 1907 |
| Doc Casey | 31 | 1122 | 1899 - 1907 |
| Ducky Holmes | 180 | 1014 | 1898 - 1905 |
EDIT: The Play Index tool only works for seasons after 1919, so originally I had Deacon White, Jim O'Rourke and Cap Anson on this list by mistake, but they both had well over 200 hits by 29.