Tom Brady just took his first L of the season ... the Patriots quarterback was forced to slash the price of his mansion that's been up for sale -- cutting $5.6 MIL from the price tag!!!
If ya missed it ... Tom put his epic 5-bedroom, 7-bathroom New England-area palace on the market back in August -- and listed it for $39.5 MILLION.
Didn't seem the G.O.A.T. would have too much trouble unloading it ... the place is sick, with a rec room, gym, wine room, spa AND an outdoor organic herb/vegetable garden.