Jeff Locke has been scratched from Tuesday's Grapefruit League game due to tightness in his right side. Jay Jackson will make the start instead against the Blue Jays. Locke pitched two scoreless frames in his spring debut last Thursday versus the Yankees and will try to stay on track through the tightness via simulated work. Edinson Volquez is likely to open the 2014 regular season as the Pirates' fifth starter. It's not clear how Locke will fit into the mix.