Sam Darnold is once again walking through a door left ajar by Geno Smith.

The Seattle Seahawks are signing Darnold to a three-year, $100.5 million contract with $55 million guaranteed, NFL Network Insiders Ian Rapoport, Mike Garafolo and Tom Pelissero reported Monday.

His big pay day, far removed from the one-year pact Darnold signed with the Vikings as a bridge quarterback last offseason, is reward for a remarkable career turnaround in Minnesota.

A former No. 3 overall pick who languished through three seasons with the New York Jets — who drafted Darnold in 2017 after Smith had failed to become the team’s franchise QB — before a two-year stint with the Carolina Panthers and a single campaign as a San Francisco 49ers backup, Darnold initially joined the Vikings sporting a 21-35 career record, 12,064 passing yards, 63 touchdowns, 56 interceptions and a 59.7 completion percentage.

He promptly tacked on 14 victories in purple while demolishing previous career highs with 4,319 passing yards, 35 TDs and a 66.2 completion percentage. But his sudden reversion to the Darnold of old, looking outmatched in a pivotal Week 18 game against the Detroit Lions and then similarly lost in a wild-card defeat to the Los Angeles Rams, muddied the waters in terms of his future in Minnesota.

The Vikings declined to franchise tag him, although they were still interested at that point in a deal that would work for both sides.

Then, on March 7, the Seahawks traded Smith to the Raiders, sending one of the biggest quarterback dominoes of the offseason toppling. Smith turned down a similar deal to Darnold’s, Pelissero reported, setting his trade into motion.

The Insiders reported on Saturday that Seattle intended to turn its attention toward Darnold, who was no longer expected to re-up with Minnesota.

Two days later, Darnold has indeed agreed to terms with the Seahawks.