You would need to know or estimate the strength of the opposition.DonaldMoir wrote: ↑Wed May 02, 2018 2:25 pmIs there any way of calculating, from the above results, how close he is to reaching the magic 1000 mark?
The easy bit is 4.5/9 as the opposition is equivalent to the rating performance ie 9 * 1233
For the rest of them, the rating has to be at least 1000 to count. Otherwise you work from the tables in the FIDE rating manual on the FIDE website. Unless he scores at least 50%, the average opposition has to be above 1000 to get a rating. The exact method used for new ratings is also in the rating manual.
In English chess, it's not normally the practice to FIDE rate tournaments where the participants are around the 1000 standard. The lowest rated player in the next 4NCL tournament is just under 1500.