A new dat is being made to accomodate those and will be released publicly soon enough.
Since I don't have the actual dumps in my hands, I don't know whether they work on NullDC emulator or not. As soon as I know, I'll post here.
Hope we can get some more verified soon (though it will definitely be harder than verifying DC discs...)
Here they are:
Dynamic Golf/Virtua Golf
Sports Jamrom ( name "Dynamic Golf v2.002 (2001)(Sega)(Jp)[!][Virtua Golf].gdi" size 87 crc 468c1495 md5 346fea58ab1a55c577138c5b04319157 sha1 980036e44ad9d694ea1699cd05c86ccd0c894c47 )
rom ( name track01.bin size 1058400 crc 3844ca3c md5 d42339b7949585091a5a50186c96afe9 sha1 821f5cac0e29be895330c5a1bf1bdbfb4ad2466d )
rom ( name track02.raw size 5016816 crc bf247b5d md5 bc3784299401a5712ad94dd586d4ec58 sha1 efc56306cad01be4709c06d8621deb4c3ae92923 )
rom ( name track03.bin size 1185760800 crc 61f4fa45 md5 8490d08f4b8b623e911f42c7620aa0b6 sha1 bb85ba2c98e19487fa761c9da1e5ee886a70f1e5 )
Super Major League/World Series Baseballrom ( name "Sports Jam v1.005 (2000)(Sega)(Jp)[!].gdi" size 87 crc 468c1495 md5 346fea58ab1a55c577138c5b04319157 sha1 980036e44ad9d694ea1699cd05c86ccd0c894c47 )
rom ( name track01.bin size 1058400 crc f09ca7eb md5 35ddcbfc115264182c4fe20eba2af50c sha1 59e116f0d2cc013198993915a36de25dae0e1e48 )
rom ( name track02.raw size 5016816 crc 4d60a1f2 md5 94c4472ccedd6e6b31821d21c981777d sha1 885a2922a257fadbc4690c64b4fc75f1a59e5435 )
rom ( name track03.bin size 1185760800 crc 74c7d6d4 md5 8fa564b0f66b19a9add06c0272d07f51 sha1 1256edc49be8f73603e9ee9c0a4cc705924854dc )
rom ( name "Super Major League v1.001 (2001)(Sega)(Jp)[!][World Series Baseball].gdi" size 87 crc 468c1495 md5 346fea58ab1a55c577138c5b04319157 sha1 980036e44ad9d694ea1699cd05c86ccd0c894c47 )
rom ( name track01.bin size 1058400 crc d61f4891 md5 7d88d18bcd0119e06b3a15b044680aad sha1 19416455ffd79bf63724b74c647b6b7b2c36efd5 )
rom ( name track02.raw size 5016816 crc 596eb2be md5 232156886ebf242afa77d402f801e9e5 sha1 dbc2367da0df8b5a4db935cc6280cd46d7c75bf1 )
rom ( name track03.bin size 1185760800 crc c075af77 md5 90876efbdd54e97da03e8ce231d7385a sha1 5eeb30b61b51e724d70976bce3834ca7e9d987c2 )