Yankees get a timely boost from old power source

As the MLB trade deadline (Tuesday at 6 p.m. ET) looms, the New York Yankees have found their most significant acquisition not in a trade, but within their own clubhouse. 

on Monday gives the Yankees a power bat they desperately need, a bat they couldn’t secure on the market.

Despite a flurry of trades over the weekend, the biggest rumored name left, Toronto’s Vladimir Guerrero Jr., remains out of reach…