Essex 530 for 7 dec (Critchley 151*, Elgar 120, Cox 67) and 257 for 4 dec (Cox 116*) drew with Kent 413 (Compton 165, Bell-Drummond 135, Critchley 5-105) and 164 for 7 (Jaydn Denly 41*, Porter 4-20)
The all-rounder joined forces with uncle Joe in a sixth-wicket stand that took 16 overs and contributed 51 runs after Kent had been on the ropes at 65 for five.
That set Kent 375 to win, initially from 76 overs, then 64 after the morning session was deserted following one other downpour.
Kent’s batters donned black armbands to mark the dying of their former England spinner Derek Underwood on the age of 78.
Essex’s quest obtained off to a flying begin in Porter’s second over when Tawanda Muyeye edged an inswinger to the wicketkeeper and the seamer then had Ben Compton lbw for six.
Simon Harmer dropped Jack Leaning first ball however made amends when Daniel Bell-Drummond went to sweep and was lbw for 18.
Leaning quickly misplaced his off-stump to Shane Snater earlier than Harry Finch was lbw to Matt Critchley, his sixth wicket in the match.
The youthful Denly rode his luck early on towards Harmer and Critchley earlier than rocking on to the again foot to ease the latter by way of the covers for his first 4.
When their partnership reached 50, from 88 balls, there was an equal cut up in contributions, however virtually instantly Porter had Joe Denly whipping the ball off his legs and into the arms of Feroze Khushi at bat-pad.
Wes Agar drove Porter to Snater to turn into the seventh wicket to fall.
