Mets: Top 10 underappreciated free agents to consider ranked

3. Kelvin Herrera– RHP; 28 years old

Kelvin Herrera is arguably one of the best, least-talked about relievers in baseball. He has had some bad moments but overall has been consistently very good.

In 2018 he boasted a 2.44 ERA with 38 strikeouts in 44.1 IP. Herrera is also in his prime so we could see his numbers continue to improve.

The Mets should at least try to sign him to a one-year deal because we should expect to see him perform exceptionally well in 2019. He will want to boost his stock in order to ink a multi-year deal in 2020.

Herrera is definitely one of the best available relievers that the Mets can sign in 2019.

2. Marwin Gonzalez– UTL; 29 years old

Marwin Gonzalez played an instrumental part in the Houston Astros’ path to their first World Series title and most baseball fans consider him to be one of the best utility players in the league.

Gonzalez’s 2017 season was unbelievable: he slashed .303/.377/.530 with an OPS of .907 while notching 23 home runs and 90 RBIs.

Even though his numbers declined in 2018, Gonzalez put on a show in the ALDS against the Cleveland Indians: he slashed .538/.571/.692 with an OPS of 1.264. What makes this even more impressive is that he was able to put up these numbers against some of the best pitchers in the league.

If the Mets do achieve their goal of making it to the postseason in 2019, they will know they have a player who is capable of going above and beyond in high-leverage situations.

Gonzalez is also a defensive wizard and can literally play any position, so the Mets can use him in the outfield, where he is needed, as well as anywhere on the diamond.

Even though Gonzalez did not have a great season, offensively-speaking, in 2018, he is still in his prime and can definitely produce the way he did in 2017 in the right lineup.

1. Adam Jones– OF; 33 years old

Adam Jones has been one of the better center fielders in baseball for a good portion of his career.

His 2018 season was not special, especially compared to his past seasons, but that is most likely due to the fact that he was on a historically atrocious Baltimore Orioles team.

Regardless, his numbers still were not bad: he slashed .281/.313/.419 and boasted a .732 OPS with 50 extra-base hits. We must also not forget that Jones is a five-time All-Star, four-time Gold Glove winner, and a Silver Slugger winner.

He has always been strong from an offensive standpoint, but even better defensively. He has many qualities that make him attractive to the Mets, but the fact that his natural position is a center fielder makes him even more appealing.

Jones will definitely have a bounce-back season if he joins a strong lineup such as the Mets’ and will provide them with much-needed depth in center field.

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Jones is, without a doubt, the best under-the-radar free agent option for the Mets in 2019.