Will England enforce follow-on? Visitors bowl out India for 337

England made sure to bowl out India 337 in 95.5 overs on Day 4 of the first Test in Chennai. India needed 45 runs to avoid a follow-on but the host could not manage to do that.

However, the English side have not enforced the follow on and they will have a bat and look to set a target close to 400. England openers have a minimum of two overs to play out before lunch. They still have 241 runs lead to their name.

As soon as the new ball was introduced, it did the damage for the visitors. All four wickets came after the second new ball was taken. Jack Leach and James Anderson picked a couple of wickets each. 

Responding to England's mammoth 578, the home team began the day at 257 for six and the duo of Washington Sundar and Ravichandran Ashwin frustrated the English bowlers by adding 48 runs before left-arm spinner Leach struck.

Leach broke the 80-run seventh-wicket partnership between Washington Sundar and Ashwin by dismissing the latter for the day's first breakthrough. Ashwin made 31 off 91 balls, with three boundaries and a six.

Leach, after a wicket-less third day, picked up his second of the match when he had Shahbaz Nadeem caught by Ben Stokes in the first slip.

Why England did not enforce the follow on?

In the Chennai heat, England had already bowled 95.5 overs - especially on a pitch that isn't exactly bowler-friendly. If they continued to bowl, the English bowlers would be drained and there is a need to keep in mind that after three days, there is another Test match.