TIGER: BY RACHEL BETRAYED!

Just how did Elin Nordegeren catch her cheating hubby?  She pretended to be him, and caught Rachel Uchitel in a sexting sting.

According to multiple reports, the potent putter's suspicious spouse was told by Tiger that his relationship with NYC party girl was strictly "platonic" despite being outed in an explosive Enquirer expose.

Tiger even called Rachel and put the two women on the phone and Uchitel confirmed Tiger's tale, The Daily Beast reports quoting sources close to Elin.

But later, Elin discovered his sexting messages and then tapped out "I miss you. When are we seeing each other again."

After Uchitel texted back, Elin dialed Uchitel direct, exploding "I knew it was you!"''

Suddenly, Tiger who had taken two Ambien to go to bed was startled out of a sound sleep.

Hell hath no fury like a Swedish bombshell scorned.