It's easy to point out a mistake with the benefit of hindsight.

The Boston Red Sox should never have signed Pablo Sandoval.

Trading uber-prospect Fernando Tatis Jr. for a washed-up James Shields no doubt haunts Chicago White Sox general manager Rick Hahn.

It's a little trickier to call those mistakes ahead of time.

We did just that in naming the 10 offseason decisions that will backfire badly in 2018. It's a healthy mix of free-agent signings, trades and unfilled roster needs.

Seattle Mariners: Trading Emilio Pagan

Emilio Pagan went from well off the MLB radar to being a key part of the Seattle Mariners bullpen last year.