Centre Tim Nanai-Williams, who played for Samoa in their 78-0 loss to the All Blacks on Friday, will start for the Chiefs.
Leigh Halfpenny's ideal haul of 20 points off the tee has most likely ensured that he shoots at goal in next weekend's first Test against the All Blacks.
Regardless of the final make up, Gatland will feel a degree of confidence that with Halfpenny, George North, Williams, Watson and Daly all in the mix, that he will be able to put out a back three with the ability to cause a few problems.
Ryuji Noguchi, Kenki Fukuoka and Yutaka Nagore crossed for second-half tries for the home side, but Ireland were always in control.
The Lions forwards carried the ball forward strongly, keeping possession through long series of phases which sapped the strength and resistance of the Maori and steadily broke down their resistance.
THE PLAYERS INVOLVED on Tuesday against the Chiefs will front up and they certainly have something to play for, with injuries likely in the coming weeks, but there is little doubt that things now move into Test mode in New Zealand. There's a big game on Tuesday and it's good timing for a good win.
Gatland said: "We have said all along that we need to give ourselves the best chance of winning the Test series, and that could potentially involve calling up players".More news: Trump announces Air Traffic Control Reform Initiative
More news: SL Green Realty Corp (SLG) EPS Estimated At $1.60
More news: Verizon Communications Inc. (VZ) Stake Lowered by Berkshire Asset Management LLC PA
Maori's misery at slipping further behind was compounded soon after; Tawera Kerr-Barlow's risky tackle on Halfpenny in the 48th minute was predictably punished with a yellow card by referee Peyper, who awarded the Lions a penalty try three minutes later after the Maori turned the ball illegally.
Apart from a try against the run of play to captain Liam Messam in the first half, the Maori were unable to mount any coherent attacking play and their spirit flagged against the smothering defense that the Lions sustained for all 80 minutes. "If it's not for this week then a great performance might come into consideration for tests two and three". It is the kind of leadership the Lions have been so craving in their tight-five.
"Which order we do it in, we will just have to wait and see".
"All the pressure is on the All Blacks because no one expects the Lions to go there and win", Davies added.
Damian McKenzie's conversion pushed the Maori into a 7-6 lead, after Halfpenny had posted two penalties for the Lions.
Referee Jaco Peyper of South Africa awards a penalty try as the Lions drive towards the Maori line.
Holding a slender 15-10 lead early in the second half, the Lions were handed a major shot in the arm through the controversial sin-binning of Maori halfback Tawera Kerr-Barlow - who hit a slipping Leigh Halfpenny high with his shoulder. The penalty try and Itoje's close-range effort were hardly laced with subtlety, however, and the backs' finishing again fell frustratingly short despite numerous opportunities.