That was a day of County Championship action that had everything.
Game of the day was undoubtedly at Chelmsford where 16 wickets fell as Hampshire got themselves on top against Essex, only for Shane Snater's 71 and a sublime spell of spin from Simon Harmer to turn the game on its head.
There were tons for a Surrey pair at either end of the experience scale - 39-year-old Hashim Amla and 20-year-old Oval debutant Ben Geddes - while Gloucestershire's Chris Dent, Northants' Rob Keogh, Notts' Haseeb Hameed, Derbyshire's Wayne Madsen and Worcestershire's Ed Barnard all hit centuries too.
But it was a day to please the table-toppers as Division One leaders Surrey closed on 445-5 against Kent as their main title rivals Hampshire and Lancashire toiled, while Division Two leaders Nottinghamshire assumed control of their top-two clash with Middlesex.
However, today has shown how quickly cricket matches can change - so please join us again right here tomorrow for day two.
Thanks for reading today. See you again in about 15 hours.