| Fight Date: | October 17, 2015 |
| Fight Name: | Gennady Golovkin vs. David Lemieux |
| Location: | Madison Square Garden New York City, U.S. |
| Fighter1: | Gennady Golovkin |
| Nickname1: | GGG |
| Record1: | 33–0 (30 KO) |
| Hometown1: | Karagandy, Kazakhstan |
| Height1: | 5 ft 10+1/2 in |
| Weight1: | 159.4 lb |
| Style1: | Orthodox |
| Recognition1: | WBC interim, WBA (Super), and IBO middleweight champion The Ring No. 4 ranked pound-for-pound fighter |
| Fighter2: | David Lemieux |
| Record2: | 34–2 (31 KO) |
| Hometown2: | Montreal, Quebec, Canada |
| Height2: | 5 ft 9+1/2 in |
| Weight2: | 159.8 lb |
| Style2: | Orthodox |
| Recognition2: | IBF middleweight champion |
| Titles: | WBC interim, WBA (Super), IBF, and IBO middleweight titles |
| Result: | Golovkin wins via 8th-round TKO |
Gennady Golovkin vs. David Lemieux was a middleweight unification professional boxing match contested between WBC interim, WBA (Super), and IBO champion, Gennady Golovkin and IBF champion, David Lemieux. The bout took place at Madison Square Garden on October 17, 2015.
The card was promoted by Golden Boy Promotions and K2 Promotions. The bout was to unify the WBA (Super), IBF, WBC interim, and IBO middleweight titles. The PPV buys were 150,000.[1] Tom Loefler of K2 Promotions said after the GGG vs. Jacobs fight that GGG vs. Lemieux did 163,000 PPV buys.
| Weight Class | Weight | vs. | Method | Round | Time | Notes | ||
|---|---|---|---|---|---|---|---|---|
| Middleweight | 160 lbs. |  Gennady Golovkin (c) | def. |  David Lemieux (c) | TKO | 8/12 | 1:32 | |
| Flyweight | 112 lbs. |  Román González (c) | def. |  Brian Viloria | TKO | 9/12 | 2:53 | |
| Heavyweight | 200+ lbs. |  Luis Ortiz | def. |  Matias Ariel Vidondo | KO | 3/12 | 0:17 | |
| Middleweight | 160 lbs. | Tureano Johnson | def. |  Eamonn O'Kane | UD | 12/12 | ||
| Junior welterweight | 140 lbs. | Maurice Hooker | def. |  Ghislain Maduma | SD | 10/10 | ||
| Lightweight | 135 lbs. | Lamont Roach Jr. | def. |  Jose Bustos | UD | 6/6 | ||
| Junior welterweight | 140 lbs. | Ruslan Madiev | def. | Sean Gee | UD | 4/4 | ||
The telecast of the fight was televised via HBO PPV.