The Seattle Mariners made a great first move of the offseason by re-signing first baseman Josh Naylor to a five-year, $92.5 million contract earlier this week.

Now, the Mariners have to worry about other holes on the roster: Namely second base, third base and the bullpen.

There are several options Seattle could pursue in free agency and the trade market to fill those holes. But the club also has internal options.

Third baseman Ben Williamson made his major league debut April 15 after an impressive spring training and then became the team's starting third baseman after his debut. But he saw his role go to Eugenio Suarez, who Seattle acquired in a trade with the Arizona Diamondbacks on July 31.

Williamson was optioned back down to the Triple-A Tacoma Rainiers on July 31 and spent the final two months of the regular season in the minors.

Williamson saw his batting average and power numbers increase in the final two months of the season in Triple-A, as he hit .327 with four home runs with 38 RBIs over that stretch.

Williamson went on MLB Network Radio on Thursday and expanded on the adjustments he made in Triple-A.

"I feel like a lot of it was just the consistency at which they hit their spots. The stuff is really good in Triple-A, maybe it ticks up a little bit with the leverage guys and the closers and the premium starters. But, for the most part, guys just hit their spots better in the big leagues. They hit their spots really, really well in Triple-A, too. But I worked with the hitting coach, Shawn O'Malley, down in Triple-A and changed a couple things with the swing to help me generate a bit more loft, a bit more power. Honestly, my mentality going into it was just to work on stuff I struggled with (in the majors) and not really see it as a demotion or anything like that. And just to work on things I struggled with to hopefully get back up there. Honestly, that kept my mind free and then working with Shawn down there was awesome. He's one of the best hitting coaches I've worked with and it was just a lot of fun working through stuff, trying new things and, honestly, just adapting on the fly and implementing it in games."

In the major leagues, Williamson finished the year with 36 runs scored in 85 games. He also popped 13 doubles and a home run with 21 RBIs. He slashed .253/.294/.310 with a .604 OPS.

Suarez is a free agent. Barring an unexpected major signing or trade in the offseason, Williamson will likely get an opportunity to regain his starting third base role.

Based on recent reporting, Williamson will be competing for the position with the organization's top overall prospect, Colt Emerson. But if Williamson is able to translate his higher average and power numbers to the majors, he might be able to find himself on the Opening Day roster for the first time.

Here are Positives and Negatives of Colt Emerson Possibly Beginning Season w/ Seattle Mariners According to a new report, the Mariners are determined to give Emerson a chance to win an opening day job in spring training.

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