World number one chess player Magnus Carlsen has lost four matches in a row at the FIDE World Team Rapid Championship. He lost to India's Arjun Erigaisi, Armenia's Shant Sargsyan, Uzbekistan's Javokhir Sindarov and Azerbaijan's Aydin Suleymanli. Carlsen's live Rapid rating is now 2803.2, which is his lowest rating since FIDE introduced official Rapid ratings in 2012.