This Eldridge call-up is a no-risk, all-reward play from Posey. Detractors will suggest that the 20-year-old’s 30 percent strikeout rate in Triple-A, where there are roughly four total good pitchers amid 30 teams, is evidence that the kid isn’t ready.

It’s undoubtedly a risky and bold move for Posey and the Giants. But for a team wanting to make sure they have the best possible lineup in their final push for the playoffs, Eldridge and his power potential are here to try and provide the Giants with a final jolt of lightning in this roller coaster of a season.

But the calculus has changed! As the weekend demonstrated, the Giants are years away from being half as good as their former archrival the Los Angeles Dodgers, but Eldridge is, theoretically, one giant leap in that direction.

San Francisco is suddenly back in postseason contention and hoping a highly touted youngster can make a difference down the stretch.

Eldridge generates ridiculous power, particularly on balls up in the zone, with some of the highest peak and average exit velocity figures among any hitter in the minors, let alone triple-A. Despite some very real whiff concerns (more on that in a moment),