Batting legend Sunil Gavaskar criticised the ball-tracking technology after Joe Root was saved by an umpire's call on Day 4 of the third Test between England and India at Lord's.

The incident unfolded in the 38th over of England's second innings, when Mohammed Siraj got a delivery to jag back and hit Root’s pads. The Indian pacer made a loud appeal, and he was supported vocally by the entire slip cordon.

India skipper Shubman Gill also backed his bowler and opted for the Decision Review System (DRS).

Replays showed that Root had shuffled across significantly and was struck in line. At the point of impact, the leg stump was clearly visible, raising India's hopes of a breakthrough.

However, the ball-tracking system predicted that the delivery would just clip the leg stump. As it turned out, the umpire's call was upheld and the Indian players were left visibly shocked and disheartened.

Gavaskar slammed both the technology and Paul Reiffel's decision after Joe Root was given not out.

"You're saying it was going to kiss the leg stump? There's no way. It was knocking the leg stump off. The only good thing is that India have not lost the review," Gavaskar said.

Siraj was convinced he had pickedup his third wicket of the day, only to be denied by the ball-tracking technology.

"I am flabbergasted. Having looked at that replay, I thought it was crashing into the inside part of the leg stump. Watching it in real time, I couldn't believe it was missing," former England cricketer Jonathan Trott added on air.

Joe Root (40) was eventually dismissed by Washington Sundar 30 minutes before Tea. His wicket reduced England to 154/5.

The hosts also lost the wicket of wicketkeeper Jamie Smith (8) and head into Tea break with 175/6 in their second innings.