In February 2008, the Mets made a historic, franchise-changing trade with the Minnesota Twins, who sent their star left-hander Johan Santana east in exchange for Carlos Gómez, Philip Humber, Deolis Guerra, and Kevin Mulvey. The Mets quickly signed Santana to a groundbreaking six-year, $137.5 million deal, making him the highest-paid pitcher in baseball at that time. Although many historians associate his peak dominance mainly with his years in Minnesota, it's a significant oversight to ignore the incredible, impactful performances he delivered for New York before his arm injuries.

Santana delivered an outstanding debut in 2008, pitching on short rest at the end of the season and totaling a career-high 234.1 innings. That summer, he reached a peak performance by going 16-7, winning the Major League ERA title with a remarkable 2.53, and setting a franchise record for strikeouts by a left-hander with 206. He finished third in the NL Cy Young voting. Interestingly, his overall 3.18 ERA during his time with the Mets is slightly lower than his legendary years with the Twins, indicating his elite ability to prevent runs.

Severe shoulder injuries and surgeries severely impacted Santana's athletic performance, causing him to miss the entire 2011 and 2013 seasons. Despite these setbacks, he achieved legendary status in franchise history through a remarkable, high-stakes game. On June 1, 2012, after a tough comeback, he took the mound at Citi Field against the St. Louis Cardinals. Ignoring pitch count limits, he dedicated himself completely, throwing 134 intense pitches to secure the first official no-hitter in New York Mets history.

That would be his last great moment in baseball, as the injuries became too much and he retired in 2014 after missing the 2013 campaign.  With the Mets, Santana had a 46-34 record.

Rick Reed became a Met before the 1996 season on a minor league deal. At 31, he was a journeyman whose career seemed stalled. His journey to New York was mired in controversy; during the 1994–95 MLB strike, Reed crossed the picket line to play as a replacement for the Cincinnati Reds. This decision made him a pariah in his own clubhouse when the regular players returned. Signed by the Mets as a backup, the control-focused right-hander proved the critics wrong with one of the most surprising and outstanding career comebacks of his time.

Reed's 1997 debut was solid, with a 13-9 record, 2.89 ERA, and a top-five 1.04 WHIP, showcasing his speed and corner pitching. In 1998, he achieved a career-high 16 wins, made his first All-Star team, and became a key figure in the league.

Reed was a key pitcher for the Mets, consistently giving team a strong chance to win with four seasons of at least 11 victories (1997–2000). His precise pitching was an era-defining outlier, often ranking high in strikeout-to-walk ratio, walking fewer than 35 batters and pitching over 180 innings. His reliability peaked during 2000, with 11 wins and a pivotal Game 3 in the NLCS, helping New York reach the 'Subway Series’ against the Yankees.

Just months after signing a lucrative three-year contract extension to stay in New York and earning his second National League All-Star nod, the front office traded the veteran right-hander to the Minnesota Twins at the 2001 July deadline in a straight-up deal for outfielder Matt Lawton. 

With the Mets, Reed compiled a 59-36 record and a 3.64 ERA.

John Olerud was only with the New York Mets for three seasons, but the already two time World Series Champion subtly racked up a lot of hits, including a 1998 season where he batted .354 and finished 12th in MVP voting.  Overall, Olerud had an excellent Slash Line as a Met of .315/.425/.501, which is an incredible number that propelled him to this rank.

In December 2009, R.A. Dickey joined Flushing on a modest minor league deal, as a 35-year-old journeyman fighting to stay in baseball. For years, he had been a fringe major leaguer struggling to master his pitching, especially after learning he entirely lacked an ulnar collateral ligament in his throwing elbow.

Dickey was highly effective right from the start, posting a remarkable 2.84 ERA in 2010 and pitching over 200 innings in 2011. He utilized what analysts described as a "hard knuckleball," delivering the pitch at an unprecedented 78-to-80 mph with sharp, late movement.

That solid foundation led to an extraordinary standout during the legendary 2012 season. That summer, Dickey hit a career peak, delivering a remarkable campaign that is arguably the best individual season by a knuckleballer in Major League history. He impressed the city by going 20-6 and leading the National League in strikeouts (230), innings pitched (233.2), complete games (5), and shutouts (3). His efficiency peaked in June when he threw consecutive one-hitters with double-digit strikeouts, setting a franchise record with 32.2 straight scoreless innings and earning an All-Star nod. His historic dominance was confirmed when he was named the clear winner of the National League Cy Young Award, marking the first time a knuckleball pitcher won this honor.

In December 2012, at the peak of his trade worth, the rebuilding Mets sent the reigning Cy Young winner to the Toronto Blue Jays in a major seven-player trade that brought back numerous top prospects, such as future All-Star catcher Travis d'Arnaud and pitcher Noah Syndergaard. He left Queens with an impressive 39-28 record and a remarkable 2.95 ERA over three seasons with the team.