The phrase dates back to the late 40’s when Warren Spahn and John Sain pitched for the Boston Braves, and were – as the epigram notes – the best two pitchers on the roster. Expect wins from them, then hope for a rainout so they can jump over the other starters in the rotation and pitch again.
This is relevant for the Phoenix Suns for one crucial reason: The Suns have talent in the guard and wing positions – incredible talent – but nearly nothing coming offensively from the power forward and center spots, pretty much guaranteeing that defenders will never need to double team down low, meaning less kick outs, meaning less open shots, meaning lower shooting efficiency and percentages, meaning, Booker and Warren, and pray for, well, you get the idea.