The highlight of Tuesday’s daily hissing match between Alex Rodriguez and Major League Baseball occurred when one of A-Rod’s attorneys called for baseball’s investigators to be scrutinized by higher authorities.

Lanny Davis, an adviser to Team A-Rod who is best known for serving as special counsel to President Bill Clinton from 1996-98, issued a scathing indictment of MLB. Not surprisingly, MLB returned volley with equally biting words.

“Commissioner [Bud] Selig is the trustee of our national pastime,” Davis’ statement read. “… I repeat my request that U.S. authorities should initiate an investigation as to whether any federal crimes have been committed by MLB investigators as well as those in the Commissioner’s office who may have been complicit in this misconduct — for example, in the purchase of stolen documents; or whether MLB filed information with the IRS that federal law requires for this type of a commercial transaction involving $125,000 in cash.”

The Post first reported on Oct. 18 MLB COO Rob Manfred testified, during A-Rod’s appeal of his 211-game suspension, he authorized the payment of $125,000 in cash for documents from Biogenesis (the shuttered South Florida anti-aging clinic) that turned out to be stolen. Team A-Rod has lodged myriad accusations about the conduct of MLB’s investigators.

In response, MLB released a statement reading: “Major League Baseball and the Major League Baseball Players Association have collectively bargained agreements that govern drug suspensions and the drug suspension of Alex Rodriguez. The Arbitration Panel will determine the relevance, if any, and validity of Mr. Davis’s baseless claims if and when Mr. Rodriguez lawyers attempt to present actual evidence as opposed to unfounded speculation.