Piri Weepu is to undergo a full medical check in Wellington on Monday after a suspected asthma attack saw his Farriers Wairarapa-Bush debut cut short.
The former All Black lay prone on the field as he was treated by ambulance staff early in the second half against Wanganui on Saturday.
He was helped to his feet and managed to walk off with assistance.
Team manager Gavin Hodder told media, Weepu “was hot and had a rapid pulse but seemed to come right by the end of the game.”
The 33-year old, 71-test veteran, would undergo a full medical check on Monday as a precaution.
“All going well he will be at training on Tuesday and Thursday and we play Ngati Porou East Coast on Saturday in Masterton,” Hodder said.
Weepu’s health scare capped off a disastrous day for Wairarapa Bush, thrashed 79-7 in the season-opener.
Stand-out second five Timoci Seruwalu grabbed three tries for the home team
In other matches, two other former All Blacks had better luck with Corey Flynn’s West Coast beating a King Country side that included Alby Mathewson, 17-6 in Taupo.
One test All Black Regan King also started with a win as Mid Canterbury skipped past Poverty Bay 34-5 in Ashburton.
Buller managed to hang on to beat South Canterbury 27-24 in Westport, after being up 17-0 at the break.
Horowhenua Kapiti made the most of home advantage in Levin beating North Otago 22-19 in a close fought contest, with a late try.
Thames Valley also got away to flying start with a six try, 42-13 win over East Coast in Ruatoria.
Heartland results round one:
Wanganui 79 (Timoci Seruwalu 3, Lindsay Horrocks, Kaveni Dabenaise, Tremaine Gilbert, Fraser Hammond, Simon Dibben, Angus Middleton, Craig Clare tries; Clare 6 con, 3 pen; Dane Whale 4 con)
Wairarapa Bush 7 (Nikora Ewe try; Tim Priest con)
East Coast 13 (Parekura Lalaga try; Kris Palmer con, 2 pen)
Thames Valley 42 (Hayden Wisnewski, Shaun Hill, Tyrone Keith, Alex Bradley, Jarred Bayliss, Matt Hart tries; Chris Doak 2 con, 2 pen; Jarrod Goodall con)
Horowhenua Kapiti 22 (Kalim Kelemete, Ethan Pollock, James So’oialo tries; So’oialo 2 con, pen)
North Otago 19 (Lisala Halaeva try; Dan Lewis pen; Josh Buchan con, 3 pen)
King Country 6 (Reece MacDonald 2 pen)
West Coast 17 (Penalty try, Todd Struthers, Rowan O’Gorman tries).
Mid Canterbury 34 (Maleli Sau, Jackson Donlan, Seta Koroitmana 2, Jarred Percival tries; Percival 3 con, pen)
Poverty Bay 5 (Siosiua Moala try )
Buller 27 (James Lash, Scott Neighbours, Blair McIlroy tries; Lash 3 con, 2 pen)
South Canterbury 24 (JP Koen, Kieran Cole, Loni Tounohuni, Bill Logavatu tries; Willie Wright 2 con)