Kevin Innes
It's many a batsman's dream: score a century then put your feet up for the rest of the match. And that's what happened to Innes in 2003: he made 103 not out as Sussex ran up 619 for 7 against Nottinghamshire in Horsham, and then immediately dropped out of the match to accommodate James Kirtley, who had been released from an England squad. Wisden reported: "Kirtley was there in time to see his alter ego reach 100. The situation was so unusual that the ECB computers - and at least one daily paper - credited the runs to Kirtley, who did take over in the field." It was the first century in first-class cricket by the 12th man - and remained Innes' only first-class hundred.

Gary Pratt
The Australians had already been grumbling about what they saw as England's tactical use of frequent sub fielders during the epic 2005 Ashes series, when Ricky Ponting was run out at Trent Bridge by a direct hit from one of them, Durham's Pratt. It was an important moment in the tight fourth Test - and provided one of the images of the series, as a scowling Ponting hurried off, only to spot the England coach Duncan Fletcher grinning broadly in the pavilion. Some choice language ensued. This - and a place on the open-top bus after the Ashes were won - was the highlight of Pratt's otherwise low-key career.

Gursharan Singh
A new Test record was set in Ahmedabad in November 1983 when Gursharan, a young Delhi batsman, took four catches as a substitute, three of them off Kapil Dev in the second innings. Gursharan, who was once marooned on 298 not out in a first-class game, played just one Test match, in New Zealand six years later.

Younis Khan
Gursharan's innings record lasted for almost 18 years, until Younis Khan grabbed four catches, all off the bowling of Danish Kaneria, as Bangladesh followed on in Multan in August 2001. It probably made up - if only slightly - for Younis missing out on a bat as five of Pakistan's top six scored centuries in a total of 546 for 3.

Sydney Copley
The first Test of the 1930 Ashes seemed to be tilting Australia's way when, chasing a distant 429, they reached 267 for 4. But then Stan McCabe hit Maurice Tate uppishly towards mid-on, where a member of the Nottinghamshire groundstaff, Copley, was fielding in place of the unwell Harold Larwood. Wisden informs us that he "made a lot of ground, took the ball at full length and, although rolling over, retained possession". England went on to win by 93 runs. It was Copley's only significant mark on the game: he made his first-class debut a week later, made only 4 and 3, and never played again.

Don Topley
Some 54 years after Copley came Topley. West Indies won their 1984 Lord's Test by cantering to 344 for 1 on the last day, but earlier in the match they had been in a spot of bother, only about halfway to England's first-innings 286 with five wickets down. Then a Malcolm Marshall hook flew towards the boundary, where MCC groundstaff lad Topley took a brilliant one-handed catch. Sadly, though, it didn't count: he had put a foot on the boundary rope, so it turned into a six. Topley had a long county career with Essex, during which he had a spell coaching Zimbabwe. He helped them upset England in the 1992 World Cup, and gleefully informed Graham Gooch, his county captain and England's skipper too, that he'd be mentioning it rather a lot in the upcoming season. "Trouble is," warned Goochie, "I don't get to too many second-team games…"

Billy Murdoch
The first substitute catch in a Test match was taken by a member of the opposing side… and the captain, to boot! When WG Grace injured a finger in the first Test ever played at Lord's, in 1884, the fielder who came out to replace him was the Australian skipper, Billy Murdoch. He was soon in action, when Australia's top scorer, "Tup" Scott, offered a catch off the legspin of AG Steel. Murdoch held on, and his side were all out.

Adam Dobb
The Lord's Test against New Zealand earlier this summer ended in comical fashion: the Kiwis' rapid decline to 68 all out was completed when Neil Wagner sliced high to long leg, where Dobb - one of two MCC ground-staff substitutes - just failed to cling on to a difficult swirler. But the batsmen indulged in a spot of ball-watching, and Wagner was stuck in mid-pitch when Jonny Bairstow's return hurtled in to James Anderson. The other sub was Billy Root, younger brother of England's Joe.

Peter Cantrell
If the Queensland batsman Cantrell had known he was going to be asked to be Australia's emergency fielder during the first Ashes Test of 1990-91 in Brisbane, he probably wouldn't have gone to a nightclub at all, let alone stayed there till 3am. Somewhat bleary-eyed, he was sent out onto the Gabba - and hung on to two catches, one a blinder to account for Alec Stewart. Five years later Cantrell played for the Netherlands (where he'd coached and played for some time) in the 1996 World Cup.

Matt Boyce
Josh Cobb was the Man of the Match when Leicestershire won the Twenty20 Cup final at Edgbaston in 2011. But the award could easily have gone to Leicester's 12th man, Boyce, who took four catches, all off Cobb's bowling, as Somerset fell short. The previous year Boyce had won the match award in a T20 game at Edgbaston, against Warwickshire, after running three people out… again while on as a sub.

Mike Denness
The South African allrounder Eddie Barlow's hat-trick for the Rest of the World in an unofficial Test against England at Headingley in 1970 was completed in unusual fashion. The World XI only had one substitute of their own, so when Barry Richards (back) joined Rohan Kanhai (hand) on the injured list, it was England's 12th man, Denness, who trotted out. Come Barlow's hat-trick ball, and Don Wilson popped up a bat-pad catch to short leg - where a rather embarrassed Denness clasped it.

Steven Lynch is the editor of the Wisden Guide to International Cricket 2013