Munster Squad Captain Peter O'Mahony, himself a former Irish U20 captain, led the call for support on twitter yesterday with Munster Rugby CEO Garrett Fitzgerald also asking supporters from across the province and farther afield to get behind the boys in green.
Jack is joined in the team by fellow Munster players Rory Burke, Max Abbott, Darragh Moloney, Diarmaid Dee, Dan Goggin, Ryan Foley and Alex Wootton, with Munster Rugby Elite Player Development Officer Greig Oliver amongst the coaching staff.
Below is just a sample of the support and good will received for the U20s, with Munster Rugby forwarding all e-mails and tweets to the team in New Zealand.
It has been a pleasure getting up at 6.30am to support you all at the JWC! I want to congratulate you on your historic achievement and wish the team all the best in the semi-final. I am sure it will be well worth the 6.05am start! You are a credit to your families, clubs and coaches.
I was so impressed by your skill set and team work, especially when down to 13 men v Wales and in the awful conditions v Fiji.
Also looking forward to seeing more of the Munster contingent Jack, Rory, Max, Dan, Alex, Ryan, Darragh and Diarmaid next season - hopefully you will have a medal to show us all at the pre-season friendly in Waterford in August!
We are all behind you as you take on the "ol' enemy" - Shoulder to shoulder, you'll answer Ireland's Call!!
Hi to All the Irish U20's
Very best of luck to you all. Your achievements to date have been brilliant and the whole country is behind you now in your next hurdle against England. You have done it before so plenty of belief and you can overcome anything.
Ádh mór a thabhairt duit go léir, from all at Dolphin RFC.
Deirdre McCarthy, Club Administrator
Best of luck on Sunday and the remainder of the tournament. Your skill levels are bringing the game to a new level. The scrummaging technique is a lesson for all to take on board.
When our Irish boys take to the paddock the nation comes together. When our boys stand up and fight a whole nations stands at their shoulder. This is our jersey, we are of this Isle and we back our own always!
G'wan the boys in green!! Rip up the field!!!
Can't wait for the semi-final Sunday morning! Who needs sleep! #dedication #IrlU20s #ShowYourSupport
Great squad effort and management, Jack O'D great captain and IRL 8 in the near future. Fast ball v England! #ShowYourSupport #IrlU20s
Continue to #ShowYourSupport for Jack, Rory, Max, Dan, Alex, Ryan, Darragh, Diarmaid and all the team. E-mail firstname.lastname@example.org with your messages of support and Munster Rugby will pass them on to the team in New Zealand.
Alternatively tweet @IrishRugby your message of support using the hashtags #ShowYourSupport and #IrlU20s