The book on Major League Baseball's 2022-23 offseason is far from closed. It will be years before there's clarity as to which teams did or didn't make out well with their winter dealings.

It's not too soon, however, to ponder what teams would do differently if given the chance.

This is the mindset as we set about pointing to one offseason mulligan that each team would like to have right about now. These concern signings and trades that aren't panning out, as well as deals that didn't happen and more general approaches to shoring up problem areas.

Arizona Diamondbacks: Approach to the Bullpen

The Diamondbacks bullpen wasn't just bad in 2022. It was singularly bad, accounting for minus-4.2 rWAR as no other pen in the majors did worse than minus-0.7.

The Snakes therefore had the right idea in prioritizing relief pitchers in free agency during the winter, but they played it safe in signing Andrew Chafin, Scott McGough and Miguel Castro to deals totaling just $15.8 million.

The result so far has been a better pen, but only to the tune of 0.9 rWAR that still places it in the bottom 10. In hindsight, the D-backs should have splurged for, say, David Robertson or Carlos Estévez.