New Delhi: India's Test team has experienced a thrilling upturn in form since for the last year-and-a-half with 2016 set to end on the brightest note in their history.
With the series win against England, the Virat Kohli-led team has won all three Test series they played this year. A draw or win in the Chennai Test would mean India will end the year unbeaten in the traditional format of the game.
Under Kohli's captaincy, team India's performance has been so outstanding that they have now become invincible at home, and have had brilliant results oversees too.
India became the No.1 Test team in the world after defeating New Zealand 3-0 in September and presently lead the the standings with 115 points ahead of England (105), and Australia (105) points.
India have previously been on top of the table from November 2009 to August 2011 and then briefly during January-February 2016 and now since August.
Team India started it's 2016 Test campaign with the West Indies tour and then welcomed New Zealand and England on home soil.
July-August 2016 : India's tour of West Indies (4 Match series, India won 2-0)
1st Test at North Sound (Jul 21-24, 2016): India 566/8d; West Indies 243 and 231 (78 ov) (f/o) (India won by an innings and 92 runs)
2nd Test at Kingston ( Jul 30-Aug 3, 2016): West Indies 196 and 388/6 (104 ov); India 500/9d (match Drawn)
3rd test at Gros Islet (Aug 9-13, 2016): India 353 and 217/7d; West Indies 225 and 108 (47.3 ov, target: 346) (India won by 237 runs).
4th Test at Port of Spain (Aug 18-22,2016): West Indies 62/2 (22 ov) (match drawn).
September-October 2016: New Zealand tour of India (3 Match series, India won 3-0)
1st Test at Kanpur- (Sep22-26, 2016): India 318 and 377/5d; New Zealand 262 and 236 (87.3 ov, target: 434) (India won by 197 runs).
2nd test at Kolkata (Sep30-Oct 3): India 316 and 263; New Zealand 204 and 197 (81.1 ov, target: 376) (India won by 179 runs).
3rd Test at Indore-(Oct8-11,2016): India 557/5d and 216/3d; New Zealand 299 and 153 (44.5 ov, target: 475) (India won by 321 runs).
November-December 2016: England Tour of India (5 match series, India leading 3-0)
1st Test at Rajkot (Nov 9-13, 2016): England 537 and 260/3d; India 488 and 172/6 (52.3 ov, target: 310) (Match Drawn).
2nd Test at Vishakhapatnam (Nov 17-21, 2016): India 455 and 204; England 255 and 158 (97.3 ov, target: 405) (India won by 246 runs).
3rd Test at Mohali (Nov 26-29, 2016): England 283 and 236; India 417 and 104/2 (20.2 ov, target: 103 (India won by 8 wickets).
4th Test at Mumbai (Dec 8-12, 2016): England 400 and 182/6 AND 195 (55.3 overs); India 631 (India won by an Inning and 36 runs)
5th test at Chennai (16-20, 2016): yet to be played.
In total, 11 matches played, won 8, lost 0. This is why India are set to win the 'Invincibles' title in Test cricket.
No matter what the result of the Chennai Test is, India were crowned champions after winning the 4th Test in Mumbai which saw skipper Virat Kohli securing his career best 235.