By WFAN.com
Jose Canseco is accusing Alex Rodriguez of cheating on Jennifer Lopez -- and he's also challenging the former Yankees third baseman to a fight.
In a series of tweets Sunday, Canseco claims that A-Rod has been having an affair with Canseco's ex-wife, Jessica.
"I was there a few months back with her when he called her on her phone," Canseco wrote.
"(P)oor girl she has no idea who he really is," the former A's slugger added, referring to Lopez. The pop star and Rodriguez announced their engagement over the weekend.
Of course, Canseco's previous tweets have included bizarre comments such as aliens have been trying to teach humans to time travel. He also once wished a very-much-alive Al Gore to rest in peace.
In this case, Canseco said he is willing to take a lie-detector test to prove what he's saying about Rodriguez is true and even tweeted his phone number at Lopez in case she had any questions.
And at one point, Canseco, for some reason, challenged A-Rod to a fight.
Rodriguez has not responded.
