Sachin Tendulkar had 194 when India declared in Multan in 2004. Has anyone else been stranded in the 190s by a declaration in a Test? asked Sarv Kothandaraman from the United States
There have so far been eight undefeated innings of between 190 and 199 in Tests, including two unlucky cases of 199 not out - by Andy Flower, for Zimbabwe against South Africa in Harare in 2001-02, and Kumar Sangakkara, for Sri Lanka v Pakistan in Galle in 2012.
Sachin Tendulkar had 194 when Rahul Dravid declared at 675 for 5 against Pakistan in Multan in 2003-04. Dravid did it to have an hour's bowling at Pakistan on the second evening - and although no wickets went down that night, India did win by an innings in the end. The only higher score in this bracket was achieved by Frank Worrell, against England in Bridgetown in 1959-60. He had scored 197 - in more than 11 hours - when his captain, Gerry Alexander, declared midway through the final day. There was little prospect of a result: England batted again and pottered to 71 without loss in 42 overs. The watching English journalist Alan Ross wrote: "Alexander several times signalled to Worrell for more action but Worrell, off on some pipedream of his own, chose to ignore him. Nelson at the Nile could not have been more disdainful." And EW Swanton noted: "When Scarlett, by repute something of a hitter, was lbw, Alexander brought Worrell in, three short of his double hundred. It was significant that Alexander's timing did not produce a dissenting voice."
It was Worrell's second undefeated score in the 190s in Tests - against England at Trent Bridge in 1957 he had carried his bat for 191.
Australia's Brian Taber made eight dismissals on his Test debut - is that the record for a wicketkeeper? asked Ronald Garside from Australia
The New South Wales wicketkeeper Brian Taber collected seven catches and a stumping in his first Test, against South Africa in Johannesburg in 1966-67, and his mark was equalled by Chris Read, who made seven catches and a stumping too, on his debut, for England against New Zealand at Edgbaston in 1999.
Eight remains the record for a player's overall debut, but South Africa's Quinton de Kock made nine dismissals - eight catches and a stumping - in his first match as the designated wicketkeeper, against Sri Lanka in Galle in 2014, having made his Test debut as a batsman earlier in the year.
Some years ago I came across the comment that Graham Yallop had the highest average of any Australian batsman when batting in the No. 4 position. What is the highest average at No. 4 for other countries? asked Mike Larkin from Australia
I was always an admirer of Graham Yallop, who I thought was an underrated batsman. But this, for once, is overrating him: Yallop averaged 36.76 when batting at No. 4 in Tests, which is solid rather than spectacular. He did better at No. 3, where he averaged 52.42.
Leading the way for No. 4s in Tests is none other than Frank Worrell, who by coincidence is mentioned in the question above. He averaged 76.22 in ten innings in this position (I imposed a qualification of ten innings, to exclude any anomalies). Next comes Steve Smith, who so far averages 74.02 from 57 innings at No. 4.
Who scored two hundreds in a Test without being dismissed? asked Shanthy Noronha from New Zealand
There have now been 86 instances of a batsman scoring two hundreds in the same Test, 37 of them in the current century. But there remains only one case where the man concerned was not dismissed in either innings: Sri Lanka's Aravinda de Silva followed 138 not out against Pakistan in Colombo in April 1997 with 103 not out in the second innings.
The West Indian Krishmar Santokie has figured in 12 T20Is without scoring a run. Who holds the corresponding record in Tests and ODIs? asked Ricky Dooley from Scotland
The Jamaican left-arm seamer Krishmar Santokie shares top spot on this list with Pakistan's Shaheen Shah Afridi, who has also played a dozen T20Is so far without troubling the scorers (both have batted once; Santokie did not receive a ball, but Afridi faced two without scoring). Three other current players have appeared in 11 T20Is without scoring a run: Ben Shikongo of Namibia, Hamza Tahir of Scotland, and Mohammed Shami of India. Shikongo was dismissed by the only ball he has faced, while the others have not made it to the crease.
There's a runaway leader in one-day internationals: the South African left-arm wristspinner Tabraiz Shamsi has so far played no fewer than 22 ODIs without scoring a run (he's faced two balls in three innings). Next is another current player, the Sri Lankan seamer Kasun Rajitha with nine matches - he's actually faced ten deliveries without scoring a run. Next come the West Indian spinner Dave Mohammed and Indian seamer Jaydeep Unadkat, who both played seven matches without scoring.
Three players have appeared in three Test matches without scoring a run. The old Worcestershire seamer Fred Root never even got to bat in his three Tests, while an even older fast bowler, Lancashire's Arthur Mold, got in three times but failed to score. More recently, the South African fast bowler Mfuneko "Chewing" Ngam played three Tests in 2000-01 without getting off the mark.