Crosland (28), who was a promising teenage swimmer in Duncan Laing's squad, returned to the competitive arena last year and is now poised to represent New Zealand in Turkey in December.
The Moana Pool lifeguard was in top form when he broke five Otago senior men's short-course records at the South Island championshipsin Timaru earlier this month in the 50m backstroke (25.42sec), 100m backstroke (53.63sec), 200m backstroke (1min 59.27sec), 50m breaststroke (29.11sec) and 100m individual medley (55.96sec). He also broke five South Island records in the same events.
Crosland is a member of coach Gennadiy Labara's Osca squad.
Kate Godfrey (Neptune) broke two Otago open records in the 100m backstroke (1min 01.72sec) and 200m backstroke (2min 11.93sec) in Timaru and South Island records in the 400m individual medley (4min 44.64sec), 100m butterfly (1min 02.57sec) and 200m individual medley (2min 16.03sec).
Her best chance for a medal is in the 400m individual medley, an event in which she won a silver medal at the New Zealand open championships in Auckland last March.
The other outstanding Neptune club performance in Timaru came from Andrew Trembath in the men's aged 14 and 15 grade, who broke seven Otago records and eight South Island records.
Neptune was the top South Island Club at Timaru with 788 points and pushed Canterbury clubs Aquagym (498 points) and QE11 ( 386 points) into the minor placings.
Promising Waves swimmer Thomas Heaton (13), a pupil at John McGlashan College, will be challenging the New Zealand 1500m freestyle record in his age group.
He swam 16min 43sec in Timaru and was just 6sec short of the New Zealand record.
Heaton is also ranked first in the 400m freestyle.
He won a silver medal in the 1500m in the boys aged 12 and 13 grade at the national age-group championships at Wellington in February.
Chris Dickie (Waves) is ranked first in the boys aged 16 50m breaststroke and clubmates Carina Doyle and Sarah Cutler are medal contenders in the women's aged 17 and 18 freestyle events.
Doyle won a gold medal in the 200m freestyle at the national age-group championships in February and two silver and a bronze medal.
Country swimmers are also in the hunt for medals after top performances at the South island championships.
Sophie Gibson (Queenstown) won gold medals in the girls aged 14 and 15 400m individual medley and 200m butterfly in Timaru.
Sophie Fairbairn (Wanaka) broke an Otago record in the girls aged 12 and 13 50m breaststroke (35.38sec) at the South Island championships and won three gold medals.
Her other strong event in Wellington will be the 100m breaststroke.
Kenzie Findlay is another Wanaka swimmer in form after winning four gold medals in Timaru.
