Edit a batter (or all starting batters) on a team to have a 99 rating on all hitting attributes.
Save the roster.
Go to Postseason mode and select the team with the 99 rated batter(s)
Play with two controllers
With the 2nd controller just throw fastballs down the middle of the plate and get a single, double, triple, and homerun in any order with one batter.
Note: Inside the park homeruns don't count.