Paltrow could possibly be called to testify today, if witnesses cannot make it due to scheduling conflicts. The actress was originally set to testify on Friday, according to a discussion during court Tuesday.

During the first day of court, Paltrow's lawyer revealed her now-husband Brad Falchuk and two children – Apple, 18, and Moses, 16 – will testify on the actress' behalf. The trio was with Paltrow at the time of the collision, but did not witness the actual incident.

FIRST WITNESS IN GWYNETH PALTROW'S SKI COLLISION TRIAL STUMBLES OVER MEMORY OF INCIDENT

After the ski collision happened, Paltrow's lawyer claimed Moses, who was nine-years-old at the time, came over with his instructor to find his mother on the ground yelling.

"He was worried," Paltrow's attorney Steve Owens said.

Owens also claimed Falchuk had heard Paltrow scream from farther down the mountain and looked up to see the "Shakespeare in Love" actress laying in the snow.

Meanwhile, Sanderson's lawyer accused Paltrow of "distracted" skiing in his opening statements. Attorney Lawrence D. Buhler claimed Paltrow was looking up the mountain when she rammed into Sanderson because she was watching her kids ski.

"Distracted skiers cause crashes," he said. "Defendant Gwyneth Paltrow knew that looking up the mountain and to the side, while skiing down the mountain, was dangerous."

The first witness also took the stand during the March 21st hearing.

GWYNETH PALTROW'S SKI COLLISION TRIAL: STAR'S HUSBAND AND TEENAGE KIDS EXPECTED TO TESTIFY

Craig Ramon, a friend of Sanderson's, was skiing nearby and allegedly heard a scream just before the collision happened. "We were skiing down the run, and then I heard this yell, this scream," he said. "I looked over … and then I see this skier just slam into the back of Terry, very hard. She hits him right directly in the back. His skis, the tips go out like this, and he falls face down kind of spread eagle."

Ramon seemingly struggled with his memory of the incident and Owens referred the witness to the nearly 300-page long deposition the witness had previously given.

"Terry was wearing a helmet," Owens said. "The person he collided with was not wearing a helmet." Ramon answered, "I don’t know."

"Did you tell me she was not wearing a helmet?" he asked, to which Ramon said, "I don’t remember what she was wearing."

Owens continued, "Did you previously tell me under oath that she was not wearing a helmet?" Ramon answered, "I can't answer that. I wasn’t really paying attention to what she was wearing." Paltrow's lawyer reminded Ramon he "previously testified this under oath" before proceeding with further questions.

Sanderson accused the Goop founder of skiing off after the accident – which left him with a "permanent traumatic brain injury, 4 broken ribs, pain, suffering, loss of enjoyment of life," along with emotional distress and disfigurement, according to the lawsuit obtained by Fox News Digital.

The retired optometrist originally sued the actress for $3.1 million and claimed he was a victim of a hit-and-run. A judge previously dismissed the claim, and Deer Valley Resort and an instructor were removed from the lawsuit.

Paltrow has maintained that Sanderson actually skied into her, and claims she stuck around until given the OK to leave by a Deer Valley Resort ski instructor. The 50-year-old actress also said Sanderson previously admitted he didn't have a clear memory of the accident in a countersuit.

The actress is seeking attorney's fees and $1.

Fox News Digital's Tracy Wright contributed to this report.