The theory is that if superstars get paid more, then middle tier players will get paid more. Not sure if I buy that theory, but that is what they usually say. A rising tide lifts all boats.
However, we can make some comparisons:
2025 Free Agents
Max Fried, Corbin Burnes, and Blake Snell got 218, 210, and 182 milion (27, 35, 36 million AAV)
Willy Adames - 182 (26)
Alex Bregman - 120 (40 - Opted out)/175 (35 in 2026
Anthony Santander - 92 (18.5)
Sean Manaea & Nathan Eovaldi - 75 (25)
Tanner Scott - 66 (22)
Luis Severino - 67 (22)
Yusei Kikichi - 63 (21)
Christian Walker 60 (20)
2015 Free Agents
Max Scherzer - 210 million. Probably comprable to all three of the 2025 top pitchers. Not a lot has changed here.
Jon Lester - 155 (25 AAV) - I'd argue this an underpay, given that his comp is probably Max Fried
Pablo Sandoval - 5 years, 95 million (19). Honestly, the comp is probably Santander. Santander is a year older and doesn't play third base, but they both have fluky careers up until this point. Pay hasn't changed much.
Hanley Ramirez - 4/88. Closest comp is Walker, but Walker is older when he signs. Gets less money but honestly, probably gets more if you take into account age. Walker is probably an increase on the salary side
James SHield - 4/75 He's probably a 3 at this point in his career. He's getting the same money as Eovaldi and Manea now, just over 4 years. Doesn't seem like much of an increase in salaries to me.
Ervin Santana - 4/55 If he were a free agent today, he'd get significantly more money than this.
Dunno, seems like there really isn't a definitive answer on this. It doesn't seem like pay has gone up much, but we do notice some trends, particularly on pitching, where the middle ground free agent is getting more money.