Three seeds secured their places in round three of the English Amateur Championship at Bromborough but two needed extra holes against gritty opponents.
Ross McGowan, on a winning streak following his victory in the South of England Open at Walton Heath last week, was involved in tussle with Bristol's Shane Winstone in which the lead switched several times.
A birdie at the long 17th put Winstone in front again but McGowan holed from eight feet for one of his own at the last to take the match into an extra hole.
Both birdied the 19th but the end came at the short 22nd where McGowan holed for another birdie.
Gary Wolstenholme, still seeking the elusive title, had a battle on his hands against Suffolk's Jamie Abbott which also went to extra time.
Abbott, 18, who will be capped for England in next week's Boys Home Internationals at Woodhall Spa, was far from overawed but went out when Wolstenholme managed a birdie-three at the 19th, which the youngster failed to match.
"I'm impressed with him," said Wolstenholme.
"He played well and is very gutsy. He deserves to be in the boys team next week and he could be a great asset for England in the future."
Steven Tiley only needed 12 holes to dismiss Geordie Ricky Lee 7 & 6, having won his opening match 6 & 5.