Marvin Williams had his highest three-point percentage in a season in 2017-18, at 41.3 percent.

marvin williams highest 3pt% in a season
2017-18Williams2015-16Williams2011-12Williams2018-19Williams2019-20Williams2013-14Williams2014-15Williams2008-09Williams2016-17Williams2010-11Williams2012-13Williams2009-10Williams2005-06Williams2006-07Williams2007-08Williams41.340.238.936.635.935.935.835.535.033.632.530.324.524.410.0
NAMESEASONTMGP3P%MPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PAFTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
Marvin WilliamsMarvin Williams2017-18CHACHA7841.325.79.54.71.20.70.50.83.37.245.81.63.91.31.682.92,00674437096563866116+68
Marvin WilliamsMarvin Williams2015-16CHACHA8140.228.911.76.41.40.71.00.84.29.245.21.94.71.51.883.32,338948521110587762133+249
Marvin WilliamsMarvin Williams2011-12ATLATL5738.926.310.25.21.20.80.30.73.68.243.21.02.62.02.678.81,5005792947147183984+70
Marvin WilliamsMarvin Williams2018-19CHACHA7536.628.410.15.41.20.90.80.63.78.742.21.95.10.91.176.72,13375640792716147156-6
Marvin WilliamsMarvin Williams2019-20TOT5835.919.55.93.21.00.60.50.62.14.644.61.02.70.81.086.01,12934318360363033103-82
Marvin WilliamsMarvin Williams2013-14UTAUTA6635.925.49.15.11.20.80.50.83.58.043.91.33.50.91.178.11,67460333478543153151-174
Marvin WilliamsMarvin Williams2014-15CHACHA7835.826.17.44.91.30.90.50.82.76.342.41.23.40.81.171.32,035577386100693660146-157
Marvin WilliamsMarvin Williams2008-09ATLATL6135.534.313.96.31.30.90.61.14.710.245.80.92.53.64.580.62,09384538281573970127+1
Marvin WilliamsMarvin Williams2016-17CHACHA7635.030.211.26.61.40.80.70.83.99.342.21.64.71.72.087.32,295849500106585360134-32
Marvin WilliamsMarvin Williams2010-11ATLATL6533.628.710.44.81.40.50.41.03.88.345.80.61.72.32.784.51,86567631388342362104-42
Marvin WilliamsMarvin Williams2012-13UTAUTA7332.523.77.23.61.10.50.50.82.76.442.30.72.31.11.477.81,7275292637737386098-97
Marvin WilliamsMarvin Williams2009-10ATLATL8130.330.510.15.11.10.80.60.93.78.245.50.51.62.22.781.92,46882041693664672160+240
Marvin WilliamsMarvin Williams2005-06ATLATL7924.524.78.54.80.80.60.31.13.06.744.30.20.72.43.274.71,95267238363482483227-87
Marvin WilliamsMarvin Williams2006-07ATLATL6424.434.013.15.31.90.80.52.04.811.043.30.20.73.44.181.52,1798393371215230127191-192
Marvin WilliamsMarvin Williams2007-08ATLATL8010.034.614.85.71.71.00.41.65.311.546.20.00.14.25.182.22,7651,1854571378133127225-162
StatMuse has season-level data for three-point percentage going back to the 1979-80 season.