Roberto Durán held many records during his boxing career including world titles in four weight divisions. However he's most remembered for his 1980 rematch with Sugar Ray Leonard in which he forfeited the match and declared "no mas" ("no more") in protest at having been forced to defend his title without sufficient time to prepare.Venezuelan director Jonathan Jakubowicz's biopic Hands of Stone focuses on the relationship between Durán (Édgar Ramirez) and his trainer Ray Arcel (Robert De Niro) while also trying and failing to cram too many other parts of the Panamanian boxer's life into its running time.While Ramirez gives his all to make Durán likeable and it's good to see De Niro in a serious role, the film suffers from a lack of focus.Beginning in 1971 when the 72-year-old Arcel first met the man with the hands of stone, the film then gives us snippets of Durán's life in poverty on the streets of Guararé, where he became a street brawler with a chip on his shoulder against the US thanks to its imperialist attitudes to the Panama Canal.This is all handled with pocket-history aptitude, but never with any sense of psychological significance. Arcel's problems with the Mob around his attempts to broaden the appeal of boxing through television are similarly flat except for a quietly menacing performance from John Turturro as Mob boss Frankie Carbo.Add to this Durán's pursuit of a blonde schoolgirl, Felicidad (Ana de Armas), who never loses her looks even after marrying him and mothering five children, and the stage is predictably set for the boxer's ultimate struggle with the ever-smiling Sugar Ray Leonard (pop star Usher Raymond in a surprisingly decent performance).Of course the problem with putting De Niro at any age in a boxing film is that comparisons with Raging Bull are unavoidable and as far as the emotional impact of Scorsese's classic, Jakubowicz just doesn't have the skills or the panache to come close.By the time the "no more" moment arrives it's just another in a series of drably delivered moments that melt into a middling, forgettable and wasted chance to tell a memorable story.What others say: With "Hands of Stone," Venezuelan writer-director Jonathan Jakubowicz has made a muscular, messy and vulgar film based on a life that has been all those things. - John Anderson, Wall Street JournalIt ends up being a little bit of everything - which is to say, not much of anything at all. - Ignatiy Vishnevetsky, A.V Club..