Joe Root marked his 100th Test with a commanding century - his third in as many matches - as England made an impressive start to the first Test against India.
The England captain hit a brilliant 128 not out in Chennai and led his side to 263-3 at the close.
Root shared a stand of 200 with opener Dom Sibley, who ground out 87 not out from 286 balls before falling in the last over of the day.
The late wicket boosted India but the high-class partnership saw England recover from 63-2, having lost Rory Burns for 33 and Dan Lawrence for a duck on the stroke of lunch.
Root and Sibley weathered a good spell of bowling in the afternoon session and then wore the bowlers down with a masterclass of batting in sub-continental conditions.
Root, who hit 228 and 186 against Sri Lanka last month, became the ninth player to mark his 100th Test with a century.
Former England captain Michael Vaughan described the innings, which began in circumspect fashion and became increasingly aggressive, as "the perfect hundred".
"His 50 to 100 was magnificent," said Vaughan, speaking on The Cricket Social. "He went up in the gears, which is exactly what this team needed.
"It has been a great innings".