Carlsen's TWIC Debut

Like the Streatham & Brixton blog in Magnus Carlsen is not that good. Is he?, anyone who hasn't already recognized the young Norwegian's rise to the world no.1 ranking can only shake his head in wonder. The first mention of Carlsen that I could find in TWIC is from 'THE WEEK IN CHESS 337 23rd April 2001 by Mark Crowther'.

Eirik Gullaksen reports: The Gausdal Classics were played at Gausdal Høifjellshotell in Norway 15-22. April 2001. In the GM group there was an impressive result by Åkesson, who cruised to a 2750 performance. The Swede also won the previous tournament at Gaudal, the Troll Masters in January.

The IMA group saw a good result by the Bulgarian Petrov, who seems to be climbing in the rating lists. Hole and Hersvik both came close to their first IM-norms, but in the end both were half a point short after drawing in the final round. 10 year old prodigy Magnus Carlsen made his debut at this level, and can be satisfied with his 2090 performance.

TWIC also published the following crosstable, showing Carlsen finishing +0-4=5.

Source: The Week in Chess

His next appearances in TWIC were

THE WEEK IN CHESS 354 20th August 2001 • Nordic Championships Bergen NOR (NOR), 4-12 viii 2001 • 1. Agrest, Evgenij g SWE 2529; 2. Kogan, Artur g ISR 2517; [...] 71. Carlsen, Magnus NOR 2084; and

THE WEEK IN CHESS 375 14th January 2002 • Troll Masters Gausdal NOR (NOR), 4-11 i 2002 • 1. Rausis, Igors g LAT 2466; 2. Womacka, Mathias m GER 2499; [...] 25. Carlsen, Magnus NOR 2127

TWIC 375 also mentioned a third place finish at the Open Norwegian Rapids.

The open Norwegian rapid chess championships were played in Fredrikstad (south-east of Oslo) 12th-13th January 2002. • Leading Final Standings: 1. GM Simen Agdestein 2572 NOR 10.0; 2. GM Vadim Milov 2595 SUI 9.0; 3. Magnus Carlsen 2072 NOR 6.5 [...] (120 participants)

How did Carlsen's rating decline from 11 January (2127) to 13 January (2072)?