KL Rahul left the field after being struck on the elbow in an injury concern for India ahead of the first Test, while Virat Kohli shrugged off speculation over his fitness but was one of several batters caught behind the wicket in an intra-squad match simulation at the WACA.
After three days in the WACA nets, India ramped up their preparations a week before the series-opener at Optus Stadium with an XI featuring their main stars out in the middle against a side filled with mostly their fringe and India A players.
In perhaps an indication that he is earmarked to open the batting if captain Rohit Sharma misses the first Test, Rahul opened alongside Yashasvi Jaiswal in overcast conditions.
Rahul looked in fluent touch and appeared to be handling short bowling well until he was struck on his right elbow by a rising delivery from quick Prasidh Krishna. The blow left him grimacing and he trudged off the ground after seeking medical attention.
Rahul did not come out to bat later in the day as India's main batters had another turn at the crease.
Jaiswal started aggressively with a belligerent whack through the covers, but on 15 he nicked off to second slip in what would become a common sight through a simulation that lasted two-and-a-half hours before lunch.
Amid reports that he has undergone scans in recent days, Kohli looked in fine touch and hit a couple of gorgeous shots through the covers. But on 15 he nicked seamer Mukesh Kumar to second slip before he then spent around 30 minutes in the nearby nets.
Short-pitched bowling had been a priority for India's batters on Thursday, with local club quicks unleashing rapid speed while some batters took part in a drill where a tennis ball was fired from close range aimed at their heads.
The WACA surface so far in this simulation has had considerably less bounce and carry than Sheffield Shield matches this season. But there has been some movement off a length and India's batters looked wanting.
Rishabh Pant, who had struggled against the short ball at times during his net sessions earlier in the week, smoked a boundary through the off-side early in his innings but he seemed shaken after copping a blow to the groin. He was cleaned bowled by a quick delivery from Nitish Kumar Reddy, who was a standout after also later claiming Dhruv Jurel in the slips.
No. 3 Shubman Gill started slowly and struggled to get the strike for his two-hour stay at the crease. He started looking more comfortable before on 28 fending to gully a short of a length delivery from quick Navdeep Saini who celebrated with gusto.
The rare sight at the WACA of spin from both ends occurred just before the interval with Washington Sundar and Tanush Kotian bowling in tandem as the batting side reached the break at 106 for 5 after 28 overs.
Befitting the simulation, with it not being an official match, India's main batters had another go of it. It appeared there were more specific match situations being tested as Jaiswal and Gill, who was scratchy the first time around, went all-out attack.
But they soon reverted to a cautious approach as they mostly dead-batted in a sedate passage of play as India's coaching staff walked laps around the boundary.
Jaiswal has looked the most comfortable against the short ball, including during the net sessions, and he was also ultra-attacking when spin came into the attack. He finished 58 not out, while Gill, who sometimes appeared anchored to the crease, made an unbeaten 42.
After the final interval, Kohli and Pant returned and they were confronted by sharp short of a length bowling from Prasidh and Reddy. Kohli was particularly troubled and played and missed on several occasions. But he found his rhythm and played a few gorgeous backfoot strokes, including a pull shot to the boundary which damaged his bat and required a change.
Kohli did not look in any discomfort, quelling injury fears, as he batted for an hour before finishing up on 30.
Pant tried to counter the length by skipping down the pitch and he had mixed success. He was eventually bowled on 24 by the impressive Mukesh - the second time in the day his wickets had been rattled.
Jurel returned and was joined by Akash Deep in the final passages as the batting side finished on 339 for 8 in a match simulation that lasted 75 overs.
The simulation is expected to continue over the weekend.