Nineteen of the Russian's twenty-one titles have been won on hard courts
A revitalized Daniil Medvedev secured his first title for 882 days with a win over opponent Moutet in the tournament championship match.
The Russian, a ex- number one, has experienced a difficult year, winning just one match at the Grand Slams and suffering a setback at the New York tournament.
His varied form on the tennis tour - and difficulties with his serving in particular - led to him dropping out of the world's top 10 and eventually splitting with former trainer his previous coach.
Currently collaborating with Johansson and his other coach, Medvedev has consistently improved in the last few weeks - culminating in a closely contested 7-5 4-6 6-3 triumph over Frenchman Corentin Moutet.
It is Medvedev's maiden title since the Italian tournament and maiden on a hardcourt from that period of the previous year.
Victory also means the Russian has won twenty-one titles at twenty-one various competitions.
"For the first time I have attended a competition with my both daughters simultaneously, so to secure a championship is particularly special," commented world number 14 the champion.
"This title is in tribute of my second daughter Victoria, because the first title I got when my older daughter Alisa was born was for her."
Medvedev, the past champion, had failed in his previous six title deciders, comprising in Halle previously this season.
His counter-punching strategy and frequent outbursts on the playing surface had led observers to wonder if his skill to compete at the elite level was concluded.
However the 29-year-old has altered his approach in the last few weeks, making an effort to advance forward and play positively, backed up by an better serve.
He recovered from a disadvantage in the first set against the challenging opponent, taking four of the last five games to take the lead.
Both players exchanged break points in the middle set before Moutet, attempting for his maiden tour championship, gained dominance to push for a decider.
Moutet saved four initial chances in a tight third set before the Russian won the break to that score to secure the win.
Fittingly, the winner earned the win with a point at the net, with Moutet unable to manage a return after a lengthy match.
