Facts:   - sport: athletics    - event: 4 × 100m relay    - height: 1.70      - birth date: 17 december 1988    - weight: kg 60   Based on these bullet points, write a short biography describing the life of masashi eriguchi .
masashi eriguchi -lrb- born 17 december 1988 -rrb- is a japanese sprinter who specializes in the 100 metres .he won the bronze medal at the 2009 summer universiade and a gold medal in relay at the 2009 asian championships .at the 2009 world championships he finished fourth in the relay .he also competed in the 100 metres .he reached the semi-final at the 2010 world indoor championships .his personal best times are 6.75 seconds in the 60 metres -lrb- indoor -rrb- , achieved at the 2010 world indoor championships in doha ; 10.07 seconds in the 100 metres , achieved in june 2009 in hiroshima ; and 20.88 seconds in the 200 metres , achieved in october 2008 in Ōita .