Complex sentence: His 450 total bases are the highest mark for any NL player ever and his 102 Extra Base Hits were the most by any National Leaguer until Chuck Klein broke it with 107 during the 1930 season.
Split into simpler sentences: His 450 total bases was the highest mark for any NL player ever. He also had 102 Extra Base Hits, the most by any National Leaguer until Chuck Klein broke it with 107 during the 1930 season.