When the work was finished, and five trades involving 22 players had been executed within six hours, A.J. Preller's peers called him everything from a "lunatic" to a "genius," a divergence befitting Major League Baseball's most polarizing executive.

The San Diego Padres made several consequential moves at the MLB trade deadline, but one new addition in particular is already turning heads.

The whirlwind of activity on the MLB trade market each summer not only sees contenders shore up their rosters for the stretch run, but also leads to a significant shuffling of the prospect landscape.