Oaklawn Park is pumping nearly $1 million more into the purses for its 3-year-old races, the track said in a release Wednesday. Oaklawn increased the purses of the four races pointing toward the GI Kentucky Derby a total of $600,000, with the GI Arkansas Derby bumped to $1,500,000 from $1,250,000; the GII Rebel S. going to $1,250,000 from $1,000,000; and the GIII Southwest S. and Smarty Jones increasing to $800,000 and $300,000, respectively. The purses for the three races for 3-year-old fillies with GI Kentucky Oaks aspirations were also increased,...