Phoenix Suns head coach Monty Williams is bullish that Chris Paul will respond in Saturday's Game 5 after an uncharacteristic display with five turnovers in Game 4's defeat to the Milwaukee Bucks.

The Bucks squared up the NBA Finals at 2-2 with Wednesday's 109-103 win over the Suns, with Williams ruing his side's 17 turnovers which led to 24 Milwaukee points.

Paul was guilty of five turnovers, including a crucial late error allowing Khris Middleton to score as the Bucks raced away in the final quarter after trailing by six points at three-quarter time.

The 36-year-old Suns guard also only managed 10 points for the game, shooting at 38.5 per cent from the field and failing to hit one three-pointer but Williams backed him to respond in Game 5 back in Arizona.

"A blip on the screen, that's how I would term it," Williams told the pre-game news conference. "You're not going to see Chris having those kinds of games frequently.

"I've been around long enough and coached against him long enough. I'd term it a blip on the radar."

He added: "There's not a person in our locker room that's not expecting to not come out and play really well the next game."

Williams added that Paul, who has battled hand and shoulder injuries during the postseason, was fine physically and fully focused.

"I just see Chris being Chris," Williams siad. "He's always intentional about everything, he's focused.

"I find myself struggling when I can't help him. That's what we've talked about the last couple of days.

"Chris is fine. He's focused. He's all about winning. The conversations are all about basketball right now. We know what's in front of us."

Paul has averaged 18.7 points per game and 8.6 assists per game this postseason, shooting at 48.5 per cent from the field.