Brendan McGovern trails Adison Da Silva by ten strokes heading into the weekend at the Staysure PGA Seniors Championship at Formby.
McGovern was unable to make any progress as he followed up an opening 71 with a level-par 72 to remain one-under and in a share of 18th place.
The Headfort professional traded three birdies and three bogeys on Friday.
Birdies on the second and ninth for McGovern cancelled out blemishes on the third and seventh in a front nine of 37 before a birdie two on the par-3 16th helped him recover from a bogey on the 13th.
Mark McNulty is a shot further back on level-par after a two-over 74 which included a double-bogey on the par-3 10th.
Meanwhile 2014 Ryder Cup captain Paul McGinley had a better second round as he carded a one-under 71 to lie on two-over.
McGinley’s birdies and bogeys were bunched together in an eventful round.
From the second to the seventh, the Dubliner went bogey, birdie, birdie, bogey, birdie, bogey in a level-par front nine before a birdie on 11 put him back under par for the day.
It was another rollercoaster finish for McGinley who bogeyed 15 and 18 but birdied 16 and 17.
Brazil’s Da Silva holds a two shot halfway advantage over Italy’s Emanuele Canonica and Sweden’s Jaokin Haeggman on eleven-under after a three-under 69.
The Brazilian dropped his first shot of the week on the 13th after birdies on the third and eleventh.
He finished well to keep his nose in front with back-to-back closing birdies.