Japan defender Daiki Hashioka played his first full 90 minutes in the English Premier League on Wednesday, but scored an own goal as relegation-threatened Luton Town lost 2-0 away to title-chasing Arsenal. The 24-year-old inadvertently put Emile Smith Rowe’s square pass into his own net for Arsenal’s second a minute before the break at Emirates Stadium, where fellow Japan defender Takehiro Tomiyasu came on for the home side in the 74th minute. “I knew as a center-back I had to defend in that moment, but it was a difficult situation,” said Hashioka, who joined Luton from Belgian club Sint-Truid…