Round 4: Vargas gets solid shot at Pacquiao

LAS VEGAS, NV - NOVEMBER 04: WBO welterweight champion Jessie Vargas poses on the scale during his official weigh in at the Encore Theater at Wynn Las Vegas on November 4, 2016 in Las Vegas, Nevada. Vargas will defend his title against Manny Pacquiao on November 5 at the Thomas & Mack Center in Las Vegas.   Christian Petersen/Getty Images/AFP

LAS VEGAS, NV – NOVEMBER 04: WBO welterweight champion Jessie Vargas poses on the scale during his official weigh in at the Encore Theater at Wynn Las Vegas on November 4, 2016 in Las Vegas, Nevada. Vargas will defend his title against Manny Pacquiao on November 5 at the Thomas & Mack Center in Las Vegas. Christian Petersen/Getty Images/AFP

Manny Pacquiao established his jab early in the fourth round as the champion Jessie Vargas was forced to go on the defensive.

Vargas tried to counter with his left hook but it would be his right straight that would find the spot midway through the round.

Momentum, however, swung back to Pacquiao’s favor with the challenger using his jab to great effect.

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