Are there specific players who have specifically acknowledged the role Hyers played in their individual improvement or success?

Not that I've seen but he's been with the club for awhile during a period when they've generally been very good. Worth noting too that he was in the minors for a couple years before that so it's likely he worked with a bunch of the guys who came through the system successfully toward the second half of the 10s quite a bit. I wonder what he's onto next. This feels like a guy trying to get himself a bench coach job or something else that pushes him toward a manager path.

Thats a good hypothesis.

I wonder if he’s headed to San Diego

Or simply that the Red Sox lowballed him (in his estimation). I'm sure it's happened before but I don't recall ever hearing of a hitting coach turning down a contract renewal. But sure, he may have asked for a "promotion" and didn't get it so decided it was time to move on.

There was something kicking around today suggesting that the Sox wanted to promote assistant hitting coach Pete Faste to co-hitting coach (and will now just give him the main job), and I wouldn't blame Hyers for reading that situation as Faste being the guy they really want and that he'd be the first to go if the team stumbled next year, or just feeling that going from sole hitting coach to one of two was an effective demotion. Might as well get out in front of it and see if there's a better job to be found this off-season.

From Speier's article on the subject in today's Globe;

But as Hyers talked with the team about a potential new deal, he felt conflicted. Hitting coaches tend to have relatively limited shelf lives in their organization, and as he considered returning, he wondered whether his voice could make a bigger difference on a team and with an organization that had not heard as much of it.

““That sounded appealing through this negotiating process,” Hyers said. “It gives me a chance to work with some other players and keep moving the game forward.”

Still, Hyers said that the decision to leave an organization with which he’s spent most of his post-playing career remained difficult. He expressed gratitude to Red Sox owners, front-office members, Cora, players, and fans for his time in Boston.

“That atmosphere is very special. It was very special this year in the playoffs,” said Hyers. “But moving on, through the negotiating process, as my contract ended, I thought it was time to move on and look for a new challenge. I think that’s where I’m at right now. There’s no animosity to the Red Sox, no bad blood. I respect and love the organization. But me and my family felt it was time to move on, look for a new challenge.”

I don't recall ever hearing of a hitting coach turning down a contract renewal.

The Rangers' Rudy Jaramillo had a lot of buzz around him as a hitting coach in the early 2000's, thanks perhaps to the reputation of The Ballpark in Arlington playing like Coors East. Wikipedia says, "During his time with Texas, his hitters won 17 Silver Slugger Awards, four [undeserved] MVP Awards, three home run titles, two RBI championships, and a batting title. Jaramillo also guided the Rangers to 13-consecutive seasons in which the offense recorded more than 800 runs scored, the longest streak by any major league team since the New York Yankees accomplished the feat in 17-straight seasons from 1926-42."

The club offered him a one-year renewal with a raise for 2009, but he bolted for a three-year deal with the Cubs who relieved him of duty after 2-1/2 of those years. He has not coached professionally with a team since.

#7: Jaramillo correctly assessed that the Rangers were low-balling him.

There's always bad blood when an employee feels like the employer doesn't value the employee to the degree they think they should be valued.

It appears that the climate controlled comfort of the BDC Dome was too much for Hyers to resist. He’s now the Rangers hitting coach.

Excellent to read the post! Matt Barnes announced that he is grieving the loss of his hitting coach Tim Hyers, who announced last week that he will not be returning for the 2022 season and also visit https://www.proessaywriting.com/coursework/ site for course work service. It was recently announced that Tim Hyers will no longer be returning to the Boston Red Sox as their hitting coach for the 2022 season.

I absolutely love the idea that the closer with exactly 1 career plate appearance would announce that he was grieving the loss of the hitting coach. Bots are truly amazing