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| Chessmetrics Player Profile: Otto Loewenborg | 
| Born: | - | 
| Best World Rank: | #26 (on the January 1921 rating list) | 
| Highest Rating: | 2506 on the January 1921 rating list, #26 in world | 
| Best Individual Performance: | - | 
| (no graph available) Best Performances Career Details Event Details Ratings only | 
| Event Name | Rating | Performance | Overall Results | Actual Results vs Rated Opponents | +/- Predicted | |
| DSB-18.Kongress-C Breslau, 1912 | not rated on January 1912 list | - | -1 (1/3, 33%) | no games vs rated opposition | N/A | |
| Mlada Boleslav, 1913 | not rated on January 1913 list | - | +2 (3/4, 75%) | no games vs rated opposition | N/A | |
| Nordisk Skakforbund Copenhagen, 1916 | not rated on July 1916 list | [2470] | +2 (4.5/7, 64%) | = (1/2, 50%) vs 2491-rated opposition | N/A | |
| Gothenburg, 1919 | not rated on January 1919 list | - | +1 (6/11, 55%) | no games vs rated opposition | N/A |