Kenyan striker Jonah Ayunga played 45 minutes but could not help St. Mirren avoid defeat to defending champions Celtic in a Scottish Premier League matchCeltic’s impressive start to the season continued with a comprehensive 3-0 win over St. Mirren at the SMISA Stadium on Sunday evening.Ayunga was part of coach Stephen Robinson’s starting eleven but was substituted at the start of the second half to make way for Mikael Mandron. ##NAJAVA_MECA_8290609##Although the lanky striker has featured in all three of St. Mirren’s matches this season, he is yet to play a full game and has struggled in front of goal, failing to score or assist since the start of the campaign.Celtic captain Callum McGregor fired the visitors ahead inside three minutes, and his fellow midfielder Reo Hatate added a second in the 33rd minute.Defender Alistair Johnston swept in a third in the 71st minute, completing a convincing victory for the champions.Sweet victory for Mara Sugar as FKFPL debutants thrash Homeboyz in season openerBrendan Rodgers’ side has won all four games this season, scoring 12 goals and conceding just one, heading into next Sunday’s Old Firm game against Rangers at Parkhead with supreme confidence.Despite their effort, St. Mirren fell short and have now lost four games in a row.Saints were knocked out of the Premier Sports Cup last week by Dundee United and will need to improve before their next match.The defeat leaves St. Mirren eighth in the league on three points after three games, having won one match and lost two.Posta Rangers set to sign Ksh10 million shirt sponsorship deal