Mohammad Ashraful signed off his Dhaka Premier League campaign with an unprecedented fifth century. However, he could not stop another loss for Kalabagan Krira Chakra, who went down by six wickets to Brothers Union in the relegation playoff fixture. Mizanur Rahman struck a 104-ball 115 that took Brothers Union to their 253-run target in 44.3 overs.

Mizanur struck 11 fours and six sixes in his knock. He added 69 runs for the first wicket with Junaid Siddique, 49 for the second with Myshukur Rahaman and 58 for the third wicket with Alok Kapali. Mizanur fell in the 31st over, before Yasir Ali and Nazmus Sadat completed the win with an unbroken 75-run fifth-wicket stand.

Earlier, Kalabagan posted 252 for 3 in 50 overs. Ashraful added 116 runs for the second wicket with Waliul Karim who made 79 with five sixes and six fours. Ashraful added 78 runs for the third wicket with Munim Shahriar before putting together an unbroken 53 for the fourth wicket with Faruque Hossain. Ashraful's unbeaten 102 included 10 fours.

Ashraful's ton was his third in a row, having made 127 and 103 not out in his previous two innings. He finishes the tournament with 665 runs from 13 matches at a batting average of 66.50. But of his five centuries this season, only one came in a Kalabagan win.

Ashraful becomes eligible for BPL and international selection from August this year.

Mohammad Isam is ESPNcricinfo's Bangladesh correspondent. @isam84