He made his Ashes debut in Australia, got engaged to his partner Ana in Sydney and now, at times single-handedly, is taking England towards the T20 World Cup semi-finals.
Which would he rank as his best moment?
“That is not for me to answer,” laughed his captain Harry Brook.
“But he has had three man-of-the-match awards this World Cup and I don’t think he has played his best cricket yet.”
Brook and Jacks go back a long way.
They were 15-year-olds when they played against each other at the famous Bunbury Festival – Jacks playing for the London schools’ side and Brook the north of England.
Jacks made 46. Brook took two wickets.
Four years later they were roommates with the Under-19s and now Jacks is keeping Brook’s first World Cup campaign as captain afloat.
When this tournament began with questions around Brook’s suitability to be captain after off-field controversy in Wellington, it was Jacks who was put forward to speak to the media to defend his mate.
Against Nepal, the right-hander hit 39 not out, without which England would have suffered one of the great World Cup shocks, and his first T20 fifty against Italy, a powerful 53 not out, pushed a tight game out of the reach of the Italians in their valiant chase.
His 21 with the bat and three wickets with the ball against Sri Lanka was another gift for Brook, coming on the captain’s 27th birthday.
England now sit one win from a World Cup semi-final.
“He is a very competitive lad,” said Brook. “He was annoyed when he got out tonight.
“After his first over he said ‘I always bowl better when I am annoyed’. That was one of the reasons I kept him on.
“He is that perfect player. He is the Jack of all trades who can do everything.”
Jacks’ Ashes was not all fairytale proposals below Sydney Harbour Bridge.
Off the field, he was one of the England players plastered across the front page of the Australian newspapers with a pint in hand in Noosa.
On it, he struggled with his two wickets in the third Test against Australia in Adelaide costing 212 runs. Across the series he took six wickets for 394 runs.
Jacks’ stubborn batting in Australia did show a side of his game that hinted at promise and now he is thriving as England’s T20 man for all seasons.
(BBCSport)