MLB 09 The Show is Sony's exclusive first-party baseball title and it sold an impressive 305,000 units on PS3 alone, making it the best-selling sports game of the month. As the #6 selling game of the month, The Show franchise has grown significantly. Patrick Seybold of SCEA told us that "MLB'09 The Show saw an increase of more than 45% growth from its 2008 version in North America."
With Killzone 2 selling over a million copies worldwide, Sony can at least tout their growing software sales. See Seybold's full statement after the break.