Mathias was waived by the Pacers on Thursday.
Mathias and the Pacers agreed to an Exhibit 10 contract Monday, Tony East of SI.com reports.
Mathias generated 22 points (9-17 FG, 4-7 3Pt), four rebounds and one assist in 35 minutes during Tuesday's 140-131 win over Santa Cruz.
Mathias posted 26 points (9-13 FG, 6-8 3Pt, 1-3 FT), three rebounds, an assist, a steal and a block in 27 minutes during Wednesday's 115-104 win over the Herd.
Mathias logged 22 points (7-11 FG, 3-6 3Pt, 4-4 FT), four rebounds, three steals, an assist and a block in 35 minutes during Friday's 118-117 win over South Bay.
Mathias totaled 20 points (8-15 FG, 2-6 3Pt, 1-1 FT), five rebounds, an assist and a steal in 33 minutes during Tuesday's 101-90 win over Westchester.
Mathias totaled 36 points (12-16 FG, 8-11 3Pt, 3-3 FT), four rebounds, an assist and a steal in 35 minutes during Tuesday's 132-130 overtime win over Lakeland.
Mathias tallied 16 points (5-12 FG, 2-8 3Pt, 2-3 FT), 13 rebounds, two assists and two steals in 40 minutes during Friday's 117-116 overtime win over Austin.
Mathias generated 16 points (6-13 FG, 4-9 3Pt), six assists, two rebounds and a steal in 33 minutes during Saturday's 127-116 win over the Vipers.
Mathias tallied 19 points (7-12 FG, 2-5 3Pt, 2-3 FT), five rebounds, two assists and four steals in 34 minutes during Monday's 111-101 win over the Capitanes.