1. Jakub Krzewina is a Polish track and field sprinter who specialises in the 400 metres.

1. Jakub Krzewina is a Polish track and field sprinter who specialises in the 400 metres.
Jakub Krzewina was a relay silver medallist with Europe at the 2014 IAAF Continental Cup.
Jakub Krzewina has a personal best of 45.11 seconds for the distance.
Jakub Krzewina appeared on the national junior scene in 2007, placing third at the national junior championships in the 400 metres.
Jakub Krzewina dipped under 48 seconds in the event for the first time that year.
Jakub Krzewina won a relay gold medal at the 2009 European Athletics U23 Championships, running alongside Marcin Sobiech, Pietrzak, and Ciepiela.
Jakub Krzewina missed most of the 2010 season but returned in 2011 and made his first impact at the senior level.
Jakub Krzewina began 2012 in peak form, setting an indoor best of 46.85 seconds then winning his first national title at the Polish Indoor Athletics Championships.
Jakub Krzewina achieved a season's best of 46.55 seconds outdoors, but did not compete internationally as a poor performance at the national championships meant he was excluded from the relay team that competed at the 2012 Olympics.
Jakub Krzewina performances declined further in 2013, having only a seventh place finish nationally.
Jakub Krzewina improved at the start of 2014 with an indoor best of 46.54 seconds to finish as runner-up at the national championships.
Jakub Krzewina opened the outdoor season with a big personal best of 45.11 seconds.
Jakub Krzewina repeated that time at the Polish Championships to claim his first national outdoor title in the 400 metres.
Jakub Krzewina was chosen for both the individual and relay events at the 2014 European Athletics Championships.