Following a season in which the Mets staff had a collective ERA of 5.01, good for second worst in the league, pitching coach Dan Warthen was relieved of his duties.

Warthen, 64, held the position since 2008, but with a club looking to change its culture, the move seemed imminent. The only coach whose job is safe is third base coach/catching coordinator Glenn Sherlock.

Kevin Long, whose contract expires Oct. 31, will be given permission to speak with the Washington Nationals for their managerial opening after the dismissal of Dusty Baker.

During the press conference introducing new manager Mickey Callaway, neither him nor general manager Sandy Alderson let on who exactly would be considered for the new pitching coach, but they both plan to work together to find one.

Callaway, who was the pitching coach for the Cleveland Indians from 2013-17 will focus on managerial duties and the team as a whole now. However, there are some very appealing names out there, as Mike Puma from the New York Post opines.

The Kansas City Royals recently parted ways with Dave Eiland, who helped capture a World Series ring with the team in 2015.

“I want to continue to be a pitching coach, no doubt about it,” Eiland told the Post’s Joel Sherman earlier this month. “I am far from done. The fire and passion and competitiveness burns as hot and deep as ever. It was just time to move on from Kansas City.

“There was a lot of change coming on the field and in philosophy,” Eiland continued. “My time there was done and that was mutually agreed upon. There were no problems on either side. Nothing lasts forever. It was simply time to move on.”

Eiland and Callaway were teammates during their time as players in Tampa Bay in the late ’90s and early ’00s.

The San Francisco Giants also made a move at pitching coach, with Dave Righetti being removed from his post. In Chicago, Chris Bosio was too let go as well as Nationals pitching coach Mike Maddux.

Righetti, 58, spent the last 18 years as the Giants pitching coach and was just reassigned within the organization after San Francisco too had a rough year like the Mets. He also had a 16-year playing career, mostly with the Giants and New York Yankees.

The 54-year-old Bosio was dismissed following the Cubs defeat at the hand of the Dodgers in the NLCS, while Maddux’s contract with Washington expired. He previously served with the Texas Rangers and was the pitching coach in Milwaukee for six seasons.

Another name Puma mentioned as a possibility is Jim Hickey, who has spent the last 11 seasons with the Rays. However, he may rejoin the Cubs and reunite with Joe Maddon who he worked alongside in Tampa Bay.

Within the organization, two names that could be considered are bullpen coach Ricky Bones and minor league pitching coordinator Ron Romanick.

Bones has spent the last six years with the team as bullpen coach, but is free to speak with other teams as Alderson and Callaway build a staff.

Romanick has spent the last six seasons in his position as well and was previously the pitching coach with the Oakland A’s.

Curt Young is someone Alderson may consider as well. Young pitched for the Athletics when Alderson was GM there. He was let go by the A’s from his pitching coach duties this season.