M-1 Global announced the signing Wednesday and MMAFighting.com has also learned that Enomoto's deal is for a total of six fights in a two-year period.
Enomoto (6-2) will replace the injured Rashid Magomedov against welterweight champion Shamil Zavurov (19-1) at M-1 Challenge 25 on April 28 in St. Petersburg, Russia.
Enomoto had a breakout year fighting for Sengoku in 2010, beating Sanae Kikuta, Kenta Takagi and Taisuke Okuno before losing in the Welterweight Grand Prix final to Keita Nakamura.
Zavurov won the 2010 M-1 Selection: Eastern European Tournament last July and then captured the M-1 belt with a fourth-round TKO over Abner Lloveras in December. Zavurov, who was 9-0 in 2010, successfully defended his belt last month against Tom Gallicchio at M-1 Challenge 23.